This beautiful Miami garden was designed as a laboratory for tropical plants.

Soak in the soul of Kansas City at the oldest continually-operating jazz club in the country.

This abandoned prison castle has become an imposing gallery of graffiti art.

A collection of antique telescopes dot the halls of the university's astrophysics department.

One of the oldest Catholic churches in the U.S., situated just east of Gettysburg.

A sacred collection of indigenous rock art.

These small house replicas have stood proudly since the 1950s, even as the property has changed hands.

This is the second-oldest rail tunnel in the United States that is still in use today.

A museum and research center dedicated to preserving the history of Rolls-Royce and Bentley motorcars.

In the bowels of a 19th-century brewery lurks a fine-dining restaurant offering an array of themed feasts.

These tourist trap caverns are said to be the former home of a legendary Pennsylvania Hermit.