The Houses of Parliament in London is a world-famous building that is home to the two chambers of the UK's parliament. Synonyms for the Houses of Parliament include the Palace of Westminster, the Westminster Palace and the Westminster Houses of Parliament. The building itself is an iconic landmark with its striking gothic architecture and dominating position on the banks of the River Thames. It has been the home of the UK parliament since the 13th century, although much of its current structure dates back to the 19th century. Whatever you choose to call it, the Houses of Parliament is a symbol of democracy and British history.