The River Mersey is a river in the North West of England. Its name is derived from the Anglo-Saxon language and translates as "boundary river". The river may have been the border between the ancient kingdoms of Mercia and Northumbria and for centuries it formed part of the boundary between the historic counties of Lancashire and Cheshire.

The Mersey Basin Campaign worked within the catchments of the River Mersey and the River Ribble, in the counties of Lancashire, Merseyside, Greater Manchester and Cheshire and in the High Peak area of Derbyshire in the UK. Its primary goal was to repair the damage done by industrialisation and to foster a modern and prosperous future, with an improved environment.
MV Edmund Gardner was a pilot cutter built for the Liverpool Pilot Service after the Second World War. She was decommissioned after nearly 30 years service and was preserved as a museum ship as part of the Merseyside Maritime Museum.

The Liverpool Cruise Terminal is a 350-metre-long (1,150 ft) floating structure situated on the River Mersey enabling large cruise ships to visit without entering the enclosed dock system or berthing mid-river and tendering passengers ashore. The terminal was officially opened on 21 September 2007 by the Duke of Kent when the Queen Elizabeth 2 berthed at the terminal. The current terminal is composed mainly of a floating landing stage, with a small passenger terminal building, but a larger terminal is under construction. The Terminal is run and operated by Cruise Liverpool, the department within Culture Liverpool at Liverpool City Council.

The Maunsell Forts are armed towers built in the Thames and Mersey estuaries during the Second World War to help defend the United Kingdom. They were operated as army and navy forts, and named after their designer, Guy Maunsell. The forts were decommissioned in the late 1950s and later used for other activities including pirate radio broadcasting. One of the forts is managed by the unrecognised Principality of Sealand; boats visit the remaining forts occasionally, and a consortium called Project Redsands is planning to conserve the fort situated at Red Sands.

The Mersey Gateway Bridge is a toll bridge between Runcorn and Widnes in Cheshire, England which spans the River Mersey and the Manchester Ship Canal. The crossing, which opened in October 2017, has three traffic lanes in each direction and is approximately 1.5 km east (upstream) of the older Silver Jubilee Bridge. It forms part of a wider project to upgrade the infrastructure around the Mersey crossings that includes major civil engineering work to realign the road network, change and add tolling to the Silver Jubilee Bridge, and build new interchanges together with landscaping 9 km of highway.
Merseyway Shopping Centre is a shopping precinct in Stockport, England. Opened in 1965, and extensively refurbished in the 1990s, it is a large pedestrianised area built on stilts over the River Mersey with two levels of walkways giving access to the retail units.

The Maunsell Forts are armed towers built in the Thames and Mersey estuaries during the Second World War to help defend the United Kingdom. They were operated as army and navy forts, and named after their designer, Guy Maunsell. The forts were decommissioned in the late 1950s and later used for other activities including pirate radio broadcasting. One of the forts is managed by the unrecognised Principality of Sealand; boats visit the remaining forts occasionally, and a consortium called Project Redsands is planning to conserve the fort situated at Red Sands.

The Runcorn Railway Bridge, Ethelfleda Bridge or Britannia Bridge crosses the River Mersey at Runcorn Gap between Runcorn and Widnes in Cheshire, England. It is alongside the Silver Jubilee Bridge. The bridge is recorded in the National Heritage List for England as a Grade II* Listed building.

The Shore Road Pumping Station is a pumping station in Birkenhead, on the Wirral Peninsula, England.

The Silver Jubilee Bridge crosses the River Mersey and the Manchester Ship Canal at Runcorn Gap between Runcorn and Widnes in Halton, England. It is a through arch bridge with a main arch span of 361 yards. It was opened in 1961 as a replacement for the Widnes-Runcorn Transporter Bridge. In 1975–77 the carriageway was widened, after which the bridge was given its official name in honour of the Queen's Silver Jubilee. It carries the A533 road and a cantilevered footway. The bridge is recorded in the National Heritage List for England as a designated Grade II listed building. The bridge was closed to vehicles for refurbishment upon the opening of the new Mersey Gateway Bridge and is due to reopen in February 2021. However it is open to pedestrians and cyclists.

Spike Island is a park in Widnes, Halton, North-West England. It is an artificial island between the Sankey Canal and the estuary of the River Mersey containing parkland, woodland, wetlands and footpaths. It is next to the Catalyst Science Discovery Centre, an interactive science and technology museum.

The Warrington Transporter Bridge is a structural steel transporter bridge across the River Mersey in Warrington, Cheshire, England.

The Widnes–Runcorn Transporter Bridge crossed the river Mersey and Manchester Ship Canal linking the towns of Runcorn and Widnes. Completed in 1905, it was Britain's first transporter bridge and the largest of its type ever built in the world. It continued in use until 22 July 1961, when it was replaced by a through arch bridge, now known as the Silver Jubilee Bridge. The transporter bridge was then demolished.

Woodside is a small riverside locality in Birkenhead, on the Wirral Peninsula, England, situated almost opposite Liverpool Pier Head across the River Mersey.