Royal Armouries

Institutions of the Tower

The Tower of London has been home to many important national institutions for over 900 years. Close to the seat of royal power at Westminster, the fortress offered a secure site for a variety of functions vital to England’s monarchy.

Competition for space and power grew as the number of institutions expanded and their employees increased. While some organisations moved out and other functions ceased, many operated for hundreds of years, making the Tower England’s ultimate power house.

Constables

Ordnance Office

Royal Observatory

The Royal Mint

Prison

Jewel House

Records Office

Menagerie

Ordnance Survey

Royal Armouries

Did you know?

World's biggest bore!

The largest bore gun ever built, fired a 3 feet diameter cast iron ball weighing around 1 tonne, containing 215kg (400lbs) of gunpowder to a range of 2.4 kilometres (1.5 miles). It was designed by Robert Mallett and is on display at Fort Nelson.