Information for Entrance - The Tower of London at HRP Tower of London, Inner London (Entrance). The iconic Tower of London has been part of British history since the early 1080s when William the Conqueror started building a massive stone tower at the centre of his fortress. Through the centuries that followed successive monarchs added to this London landmark which has acted as fortress, palace and prison. The Tower of London is also home to the world famous Crown Jewels. They are the greatest working collection of Crown Jewels in the world and priceless symbols of British Monarchy. Don't miss the winter ice rink either.