This tour is run by Ayers House Museum. We purchase it on a deal with the Museum tour, but decided to do it on another day. Would not recommend doing this - do it after the other tour. We were disappointed. We saw one apartment with a brick arched roof, the old govt cabinet room and some tunnels (part was closed for a hotel function). Our guide was very knowledgeable and we did learn quite a bit about the early history of the building. A surprise was the lovely courtyard within the complex.

Approximate cost: $8 usually