One of the oldest Mexican restaurants in the United States air-dries its trademark beef in a dangling outdoor cage.

Located in Faneuil Hall, the headquarters of the Ancient and Honorable Artillery Company of Massachusetts has stood the test of time.

This nearly 200-year-old restaurant's history includes an exiled French prince, JFK, and a very hungry Daniel Webster.

A mysterious stone embedded at the base of a historic Boston building.

This massive tea kettle was once a promotional stunt for the Oriental Teashop.

This bug-eyed water wheel uses the power of the Sun to clean up Baltimore Harbor.

A pride of the state, this working museum crafts pottery mosaics in the style of Pennsylvania's earliest European settlers.

The Cold War-era "underground Pentagon" is a sprawling subterranean hideaway for the Defense Department.

This collection honors the iconic, and proudly American lighter that just won't quit.

A cement mixer-turned-kaleidoscope in downtown Norfolk offers different views of the city.

Every drop of D.C. tap water flows through this old waterworks.