From hidden passageways, panic rooms hidden behind bookcases, and sliding walls that reveal a safe space, things aren't always what they seem, as these weird and wonderful secret rooms prove ...

Bedrooms, bars and bathrooms are hidden in plain sight behind concealed wall panels and operable bookshelves in this lookbook ...

Check out these incredible underground homes that seamlessly blend in with their surroundings, from hobbit houses to earth homes and modern glass retreats ...

The Secret Weapon to Fight Flooding Is Hidden in Plain Sight It looks like and feels like a regular street. But beneath the surface, six layers are working to keep rainwater from overwhelming New ...