St Paul’s Cathedral is an Anglican cathedral in London. It sits on Ludgate Hill at the highest point of the City of London. The present cathedral, dating from the late 17th century, was designed in the English Baroque style by Sir Christopher Wren. Its construction, completed in Wren’s lifetime, was part of a major rebuilding programme in the City after the Great Fire of London. The earlier Gothic cathedral (Old St Paul’s Cathedral), largely destroyed in the Great Fire, was a central focus for medieval and early modern London, including Paul’s walk and St Paul’s Churchyard being the site of St Paul’s Cross.

Tower Bridge is a combined bascule and suspension bridge in London, built between 1886 and 1894. The bridge crosses the River Thames close to the Tower of London and has become a world-famous symbol of London. As a result, it is sometimes confused with London Bridge, about 0.5 miles (0.80 km) upstream.

The Tower of London, officially Her Majesty’s Royal Palace and Fortress of the Tower of London, is a historic castle on the north bank of the River Thames in central London. It was founded towards the end of 1066 as part of the Norman Conquest of England. The White Tower, which gives the entire castle its name, was built by William the Conqueror in 1078 and was a resented symbol of oppression, inflicted upon London by the new ruling elite. The castle was also used as a prison from 1100 (Ranulf Flambard) until 1952 (Kray twins), although that was not its primary purpose.