Beautiful public park off the beaten path and away from tourists.

Collapsing castle on the Hudson river was once the storage site of military surplus business.

This little slice of old Jerusalem in Oklahoma is the evolution of a century-old passion play.

Final resting place of Geronimo, Quanah Parker, and the first atomic gun ever fired.

American bison herd descending directly from a Bronx Zoo breeding program that saved the species from extinction.

The design of the Palacio Salvo has been described as "a lighthouse on top of a building."

Constructed on the ruins of a convent, this tower saved countless lives.

The final resting place of the liberator of Argentina is guarded around the clock by two soldiers.

A tower devoted to — and modeled after — the Divine Comedy.

This historic, palatial theater is now one of the world’s most beautiful bookstores.

105-foot wide giant metallic flower blooms anew every day in the heart of Buenos Aires.

Buenos Aires' city of the dead contains some very famous remains, including Eva Perón.

Historic fortifications form the boundary of Vatican City, but it’s not entirely surrounded by walls.

When a supermarket opened up shop within a medieval building it became protected by UNESCO on a technicality.

A wonderfully strange collection of 500+ stuffed frogs doing people things.

An underground city of salt.

This Boeing KC-97 tanker is now a restaurant for aviation lovers.

This landmark cemetery in Boston was created more than 300 years ago.

Ancient rock-hewn town that witnessed key events of Georgian history.

A museum glorifying the life of Stalin, located in the city of his birth.

The charmingly disheveled clock tower of Tbilisi's puppet theater.

Air Force Academy Chapel made of 100 identical tetrahedrons works to inspire those of all religions.

Strange red rock formations that have been attributed to a higher power for hundreds of years.

These medieval skyscrapers dominate the skyline of this small Tuscan town.