Smithsonian Magazine on MSN6mon
Workers Uncover an Underground Chamber Sealed for More Than a Century Near the National Mall
During the renovation of the Smithsonian Castle in Washington, D.C., workers have discovered a hidden chamber. Built in 1847 ...
Hosted on MSN1mon
From Cisterns to Temples, These Twelve Underground Worlds Are Open for Exploring
The Ottomans rediscovered the chamber in the 15th century but, even today, the source of its water remains unknown. Renovated and opened to the public in 1987, the Basilica Cistern is now a ...