
Lagar Velho is a rock-shelter in the Lapedo valley, a limestone canyon 13 km from the centre of Leiria, in the municipality of Leiria, in central Portugal. The site is known for the discovery of a 24,000-year-old Cro-Magnon child, later referred to as the Lapedo child.
The Cromlech of the Almendres is a megalithic complex, located 4.5 road km WSW of the village of Nossa Senhora de Guadalupe, in the civil parish of Nossa Senhora da Tourega e Nossa Senhora de Guadalupe, municipality of Évora, in the Portuguese Alentejo. The largest existing group of structured menhirs in the Iberian Peninsula, this archaeological site consists of several megalithic structures: cromlechs and menhir stones, that belong to the so-called "megalithic universe of Évora", with clear parallels to other cromlechs in Evora District, such as Portela Mogos and the Vale Maria do Meio Cromlech.

The Anta da Estria is a megalithic dolmen situated between Belas and Queluz in the Lisbon District of Portugal. Based on datings of human remains, it is believed to date back to the late-Neolithic and early-Chalcolithic eras. The Anta da Estria, the Anta do Monte Abraão and the Anta da Pedra dos Mouros are collectively known as the Antas de Belas, and were first identified in the 1870s by Carlos Ribeiro (1813-1882), who is regarded as the "father" of Portuguese prehistoric archaeology.

The Anta da Pedra dos Mouros, also known as the Anta do Senhor da Serra, is a megalithic dolmen situated near Belas and Queluz in the Lisbon District of Portugal. It is believed to date back to the late-Neolithic and early-Chalcolithic eras. The Anta da Pedra dos Mouros, the Anta da Estria, and the Anta do Monte Abraão are a short distance from each other and are collectively known as the Antas de Belas. The Anta da Pedra dos Mouros was first identified in the 1850s by Carlos Ribeiro. Despite being registered and protected as a national monument in 1910, the dolmen has recently suffered significant damage.

The Anta da Vidigueira is a megalithic dolmen or burial chamber located southwest of the village of Freixo, in Redondo municipality in the Évora district of the Alentejo region of Portugal. The dolmen was probably constructed between the Neolithic and the Chalcolithic. It has been classified as a National Monument since 1910.

Anta is the Portuguese name for about 5,000 megaliths built during the Neolithic period in the area of Portugal. The Anta das Pedras Grandes is a late-Neolithic site located in Casal Nova in the parish of Caneças, in the Odivelas municipality, in the Lisbon District of Portugal. It was classified as a National Monument in 1944. Excavations in the early 21st century suggest that it was originally built as a dolmen or single-chamber megalithic tomb, consisting of a polygonal long chamber with eight supporting stones about 3 metres tall, and a short access corridor. There are traces of a tumulus, and human bones have been discovered. Excavations in the surrounding area also identified many flint chippings, suggesting that the area was used for the production of flint items.

The Anta de Adrenunes, located on top of a hill at 426 metres above sea level, in the Sintra-Cascais Natural Park, Lisbon District, Portugal, is believed to be a stone age burial chamber or megalithic monument. It is a structure consisting of a cluster of granite stones, between which there is a gallery about 5 metres high that is surmounted by monoliths that rest horizontally on vertical stones. The passage is thought to have served as a collective necropolis or dolmen during the megalithic period although no artifacts or burial chambers have been found to prove this. The site contains a geodesic landmark that has been inserted into one of the upper stones.

The Anta de Agualva, also known as the Anta do Carrascal, is a megalithic dolmen situated in an urban area of Agualva-Cacém in the municipality of Sintra, in the Lisbon District of Portugal. First identified by Carlos Ribeiro in 1875, the dolmen has recently been restored and can be easily visited.

The Anta de Carcavelos, located close to the village of Carcavelos near the town of Lousa in the municipality of Loures in the Lisbon District of Portugal, is a stone age dolmen or megalithic monument from the Chalcolithic period. It is one of many such tombs that have been identified in Portugal.

The Anta do Alto da Toupeira, also called the Anta da Toupeira or the Anta de Salemas, is a Neolithic dolmen, or megalithic tomb, situated in the parish of Lousa in the municipality of Loures, in the Lisbon District of Portugal. It dates back to the Chalcolithic.

The Anta do Monte Abraão was a megalithic dolmen located in the parish of Monte Abraão, in Queluz, Sintra Municipality, Lisbon District, Portugal. The dolmen was first identified in 1876, by Carlos Ribeiro, who carried out excavations until 1878 and published his results in 1880. Excavations suggest that it served as a tomb for about 80 individuals and that it dates back to the middle to end of the Neolithic period. The Anta do Monte Abraão and the nearby Anta da Pedra dos Mouros and Anta da Estria are collectively known as the Antas de Belas.

The Antas da Valeira are two Chalcolithic dolmen, or burial chambers, about 100 metres apart, close to the village of Nossa Senhora da Graça do Divor in the Évora district of the Alentejo region of Portugal. Situated in a farm field about one kilometer from the Vale Maria do Meio Cromlech and ten kilometers from the notable megalithic complex of the Almendres Cromlech, these dolmen are among numerous megalithic sites identified in the Évora area. These two monuments have yet to be studied by archaeologists and are in a poor condition.

The Antas do Barrocal, also known as the Antas Herdade do Barrocal, are a set Neolithic dolmens, or megalithic funeral chambers, at Monte do Barrocal, in the parish of Nossa Senhora da Tourega, in the Évora District of the Alentejo region of Portugal. They are in an area with a high concentration of megalithic sites. Nine have been identified but only two are more than remnants and only Number 1 can be visited. This has been classified as a National Monument since 1910.

The Antas do Olival da Pêga are located near the village of Telheiro, in the municipality of Reguengos de Monsaraz, in the Évora district of the Alentejo region of Portugal. Anta is the Portuguese name for a dolmen, a single-chamber megalithic tomb. These two neolithic dolmens were used over a long period, from the late neolithic to the chalcolithic. The tombs were originally identified by the German archaeologists, Georg and Vera Leisner, who excavated Anta 1, with Anta 2 being subsequently excavated from the 1990s by Victor Gonçalves and Ana Catarina Sousa of the Centre of Archaeology of the University of Lisbon (UNIARQ). In addition to the visible stones at the two sites, which are about 300 meters apart, many items have been found as a result of excavations. Over one hundred people were buried in each tomb. The proximity of the two tombs gives rise to the conclusion that both were part of the same megalithic complex.

The Artificial caves of Alapraia constitute a prehistoric necropolis formed by four subterranean tombs or hypogea that were created by excavating marlstone rock using stone tools. They are situated in the centre of the suburb of Alapraia in Estoril, Lisbon District, Portugal and are believed to date back to the last quarter of the 4th Millennium BCE and to have been used as a necropolis for over one thousand years.

The four Artificial caves of Casal do Pardo, also known as the Caves of Quinta do Anjo, were neolithic tombs. They are situated in Palmela municipality in the Setúbal District, of Portugal, about 25 km (16 mi) south of the capital of Lisbon. These caves were classified as a National Monument of Portugal in 1934.

The Barreira Megalithic Complex is located in the Sintra municipality in the Lisbon District of Portugal. Situated on a small wooded hill overlooking the village of Odrinhas, site of Roman ruins and an archaeological museum, it consists of about twenty menhirs and other monoliths or megaliths.

The Prehistoric Rock-Art Site of Escoural Cave is a structure known for its Paleolithic-era rock-art and funerary burial site, located in the Portuguese municipality of Montemor-o-Novo, in the civil parish of Santiago do Escoural.

The Menhir of Bulhoa, also known as the Menhir of Abelhoa, is a granite megalithic standing stone, located near the parish of Monsaraz, in the municipality of the Reguengos de Monsaraz, in the Évora district of the Alentejo region of Portugal. It was classified as a National Monument by the Government of Portugal in 1971.

The Menhir of Outeiro, also known as the Penedo Comprido is a megalith located midway between the villages of Outeiro and Barrada near the municipality of Reguengos de Monsaraz, in the district of Évora, in the Alentejo region of Portugal. It is a few kilometers from the Portuguese-Spanish-border. The stone was discovered on its side in 1969 by Henrique Leonor Pina and José Pires Gonçalves and, on the initiative of Gonçalves, it was raised again around 1970. The menhir was classified as a Portuguese National Monument in 1971.

The Necropolis of Carenque is an archaeological site consisting of three well-preserved late Neolithic collective sepulchres or tombs, dating back to about 3000 BCE, which are dug into smooth limestone outcrops. It is situated in the municipality of Amadora in the Lisbon District of Portugal.

The Cave of Pedra Furada is a small cave located in the municipality of Vila Franca de Xira, about 20km north of Lisbon in Portugal. Archaeological studies conducted within the cave suggest it was occupied intermittently by humans during at least three periods between the end of the fourth millennium BC and the second millennium BC. The cave results from karstification of the limestone Upper Jurassic Massif.

The Cave of Pego do Diabo is a small karst cave in a Turonian limestone outcrop located about 250 metres above sea level in the municipality of Loures, about 20 km north of Lisbon in Portugal. The erosion of the outcrop resulted in a set of openings in the rocks wide enough to be exploited by humans. Several archaeological studies have been conducted within the cave, which give insights into the duration of Neanderthal presence on the Iberian Peninsula and to the presence of carnivorous animals during the Paleolithic.

The Praia das Maçãs Prehistoric Monument, also known as the Tholos of Outeiro das Mós, consists of an artificial Neolithic cave and a Chalcolithic domed or beehive tomb. It is situated close to the Praia das Maçãs beach, near the town of Colares in Sintra municipality, in the Lisbon District of Portugal. The area was discovered in 1927. As an important prehistoric sepulchral site, it was classified as a national monument in 1974. Surrounded by housing, the location has been designated as a special zone of protection, and construction is forbidden. Plans by Sintra and the Directorate-General for Cultural Heritage to turn the complex into a museum area, first discussed in 2001, have not yet been implemented. For purposes of protection the site has been covered by sand and there is little presently visible.

The Cave of Salemas is located close to the village of Lousa in the municipality of Loures in the Lisbon District of Portugal. Discovered by archaeologists during the 1950s, the cave appears to have been occupied by humans as a temporary refuge during the Upper Paleolithic and used as a tomb during the Neolithic.

The Tholos do Barro was a Chalcolithic or Copper-Age domed tomb of block masonry. Its ruins are located on Monte da Pena, near the village of Barro, Torres Vedras municipality, in the Lisbon District of Portugal. The tholos was classified as a National Monument in September 1940.

The Vale Maria do Meio Cromlech is a megalithic stone circle situated in Évora district in the Alentejo region of Portugal. It is believed to date back to the fifth millennium BCE or earlier, and is classified as a National Monument.

The Xerez Cromlech, also known as the Xarez Cromlech, is a megalithic complex that is believed to date back to the 4th or 5th millennia BCE. It is situated near the town of Monsaraz in the Évora district of the Alentejo region of Portugal, close to the Spanish border. The present site of the cromlech is not its original location. Due to the construction of the Alqueva Dam for hydroelectric purposes, which led to the flooding of the original site from 2002, it was transferred from an area that is now under water to its present site close to the Orada Convent. This was the only monument to be moved, with the dam leading to the disappearance of prehistoric engravings and the Roman Castelo da Lousa.