The Rotunda started life as a bell tent in St James' Park. Constructed by John Nash, it was used for the 1814 celebrations of the Allied Sovereigns. It was moved here six years later when a permanent Chinese-style lead roof and a central pillar were added. Inside, other columns support individual vaults. The Museum of Artillery, which used to be here, has since moved to the Firepower Museum at the Royal Arsenal. The Rotunda was restored in 1975.
