Located in Somerset House, London, this grand rotunda stairway rises up through the building to the Navy Board Rooms. <br /><br />The present five storey stair is a replica of what was there up until the original suffered significant damage in The Blitz during World War II. It was rebuilt in the early 1950s using the original plans <br />The architecturally interesting stair, which is located in the South Wing, was originally built in the late 18th century to the designs of Sir William Chambers with each flight a different configuration to the one underneath (the design was apparently made to reflect something of the stairs on ships).<br />It was initially known as the Navy Stair but renamed the Nelson Stair, ostensibly in honour of the heroic Vice-Admiral Horatio Nelson.