query: When was Westminster Cathedral built?
passage: Westminster Cathedral
The site on which the cathedral stands in the City of Westminster was purchased by the Diocese of Westminster in 1885, and construction was completed in 1903.[2] Westminster Cathedral is the largest Catholic church building in England and Wales and the seat of the Archbishop of Westminster.
passage: History of London
In 1707, an Act of Union was passed merging the Scottish and the English Parliaments, thus establishing the Kingdom of Great Britain. A year later, in 1708 Christopher Wren's masterpiece, St Paul's Cathedral was completed on his birthday. However, the first service had been held on 2 December 1697; more than 10 years earlier. This Cathedral replaced the original St. Paul's which had been completely destroyed in the Great Fire of London. This building is considered one of the finest in Britain and a fine example of Baroque architecture.