The Pierhead Building (Welsh: Adeilad y Pierhead) is a Grade 1 listed building of the National Assembly for Wales in Cardiff Bay, Wales. It stands as one of the city of Cardiff's most familiar landmarks and was built in 1897 as the headquarters for the Bute Dock Company. The clock on the building is unofficially known as the "Baby Big Ben" or the "Big Ben of Wales", and also serves as a Welsh history museum. The Pierhead Building is part of the estate of the National Assembly for Wales, which also includes the Senedd and Ty Hywel. Cardiff Bay played a major part in the development and success of Cardiff as an exporter of coal to power the industrial age. Tiger Bay is historically one of the first multicultural ports in Great Britain and the community comes from up to 45 different nationalities. The docks were regenerated in 1999 by the creation of the Cardiff Bay Barrage.