The remains of this 2nd-century Roman temple are incorporated into a modern building.

This equestrian statue of Constantine the Great has been the subject of criticism for centuries.

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

The Italian revolutionary's legendary wife is portrayed on horseback waving a gun and holding her child in this memorial on the Janiculum.

The "Greatest Sewer" of ancient Rome is one of the oldest sewer systems in the world, and is still in use.

This curious, round temple is the oldest still-standing marble building in Rome.

The yawning maw of this pagan visage is said to bite off the hands of liars.

This one-of-a-kind Roman arch is not actually dedicated to the god Janus.

These hut foundations are believed to be the residence of Romulus, founder of Rome.

This ultra-modern wooden boardwalk turns the ocean into a swimming pool.

Copenhagen's celebrated theme park and gardens.

Twelve sweet, nutty, life-sized statues are housed in this second-story shrine to almond paste.

An abandoned train station in Munich constructed for the 1972 Olympic games.

Daily jousts and dancing barrel makers in Munich's mechanical clock.

Oddly enough, a pair of Wolfs funded the construction of this Little Red Riding Hood sculpture.

Go surfing on this urban wave, "hacked" by local surfers.

This beautiful 19th-century temple stands atop the ruins of its predecessor.

The unusually large seat sits atop the base of a ruined temple.

What appears to be an ordinary bridge is actually a rare aqueduct.

According to legend a man pooped out the window of this tower to prove that it was straight.

In this truly magical place, rent hasn't been raised since the year 1520.

Legend says this sculpture commemorates a brave baker who rescued the city in the Thirty Years' War.

The prototype for all Nazi concentration camps.

A Victorian natural history and ethnographic museum with wonderful turn-of-the-century, science-book-esque evolution displays.