Hogwarts?

Makes your head spin, does it? Looking up at these stairs inside Clive House, you do get a tinge of vertigo. The stairs are to one side of the great hall on the first floor of the building and take you to different levels, up, down and sideways. 

The Great Hall inside Clive House is not much to look at, for it is just that - a big hall. It is when you think about the debates and the arguments that may have taken place there that you realize its significance in shaping the dominion of India. Though originally owned by Shawmier Sultan, an Armenian merchant, the Admiralty House was taken over by the East India Company in 1755. The Great Hall was used not only for meetings but also for banquets and balls. During one of the wars, when St Mary's Church served as a granary, the Great Hall was used for conducting services.

Most of the rooms leading off, and adjacent to the Hall are locked up today. You can troop up and down these stairs, but the only door that you can pass through is the one below that lets you out of the building!