Flames have been burning within this mountain for more than 2,500 years.

This two-room factory has been cranking out the musical signifier of zaniness for a century.

This was one of the first (and last) university-built and operated nuclear reactors.

A 98-room castle in the middle of Toronto that bankrupted a 19th century electricity multimillionaire.

Every weekend, the parking lot of this Buddhist temple turns into a Thai street-food paradise.

This centuries-old Italian chapel hangs midway down a sheer cliffside.

A unique attraction and museum dedicated to exploring iconic roadside structures.

This gaping hole in the middle of a remote mountain lake looks like a portal to another dimension.

This beautiful Brooklyn monument over a crypt memorializes a grim and largely unknown story from the American Revolution.