The Marina Towers Observatory (also known as the Swansea Observatory and Tower of the Ecliptic) is located in the Maritime Quarter of Swansea, on the coast of southern Wales.

It was previously home to Wales's largest optical astronomical telescope.

[1] The building was designed by Robin Campbell in 1989 and consists of two towers, it was built with part funding from a European Heritage Grant.

The top of the tower has a stained glass feature designed by David Pearl.

Observational facilities previously included a 20-inch Shafer-Maksutov telescope - the second largest of its kind in the world.