
Trinidad and Tobago is an archipelagic republic in the southern Caribbean between the Caribbean Sea and the North Atlantic Ocean, northeast of Venezuela. They are southeasterly islands of the Lesser Antilles, Monos, Huevos, Gaspar Grande, Little Tobago, and St. Giles Island. Trinidad is 11 km (6.8 mi) off the northeast coast of Venezuela and 130 km (81 mi) south of the Grenadines. The island measures 4,768 km2 (1,841 sq mi) in area with an average length of 80 km (50 mi) and an average width of 59 km (37 mi). The island appears rectangular in shape with three projecting peninsular corners. Tobago is 30 km (19 mi) northeast of Trinidad and measures about 298 km2 (115 sq mi) in area, or 5.8% of the country's area, 41 km (25.5 mi) in length and 12 km (7.5 mi) at its greatest width. The island is cigar-shaped in appearance, with a northeast-southwest alignment.

Aripo savannah is a tropical savanna ecosystem in the northeast of Trinidad. It is a rare example of savannas formed due to edaphic factors, i.e. the growth of trees is restricted not by climate but by a shallow layer of clay. This impervious hardpan clay layer restricts the growth of roots and magnifies both seasonal flooding and seasonal drought. These factors combined with regular exposure to the uninterrupted tropical sun make the savannas a hostile environment for most plants and animals.

Carlsen Air Force Base is a former United States Army Air Forces World War II airbase on Trinidad, consisting of two landing strips, "Edinburgh" and "Xeres". The airbase also included an emergency landing strip, "Tobago".

The Delaware Bank is an area of shallow water 20 miles off Galera Point on the east coast of Trinidad to the south of Tobago. The seafloor comes to within six fathoms of the surface, making the bank a hazard for shipping.

Devil's Woodyard is one of the most visited locations of Trinidad's many mud volcanoes. Located in Hindustan in New Grant near Princes Town, the series of several vents appeared in 1852. As legend goes: "A relatively young volcanic site got its name after its first eruption in 1852. Which shook the entire village and fell the tall trees and frightened the Amerindian villagers. Villagers at the time believed that the devil had come from beneath the earth to fell the woods. The mounds of earth which occasionally bubble and hiss continue to amaze visitors of the site."

Trinidad and Tobago dry forests are tropical dry forests located primarily in western and southern parts of the island of Trinidad, in southern parts of the island of Tobago and on smaller offshore islands including Chacachacare, Monos, Huevos, Gaspar Grande, Little Tobago and Saint Giles Island.

Waller Air Force Base is a former United States Air Force World War II air base located in northeastern Trinidad. It is located about 5 miles (8 km) southwest of Valencia south of the Churchill-Roosevelt Highway and roughly 32 km from the capital city Port of Spain.