This 19th-century fountain's namesake animal isn't what you think it is.

A curious carving hides on a marble column in the Mosque-Cathedral of Córdoba.

Spain's unique Mosque-Cathedral has been a place of worship for both Muslims and Christians throughout its history.

Illegal drag racing two stories beneath Chicago’s streets.

A little-known subterranean street runs under some of the best-known buildings in Chicago's River North.

Sway your way across Virginia’s longest river on a rickety wooden bridge.

A sacred site for Native Americans surveyed by George Washington and owned by both King George III and Thomas Jefferson.

An organ located deep within a cave, whose "pipes" are the geological features of the cave itself.

Every equinox this Maya pyramid puts on a spooky ancient light show.

Clap your hands at the base of the pyramid, and the song of a sacred Mayan bird will echo through the air.

The word "Watergate" will forever be associated with the infamous scandal in 1972, but this fountain is famous in its own right.

Thomas Jefferson's estate is home to hundreds of varieties of historic fruits and vegetables.

Royals, rebels, and artists have all conversed at this grand 19th-century Viennese coffee house.

This sacred fig tree with a link to the Buddha is one of the oldest human-planted trees in the world.

An ancient stone fortress considered by many to be the eighth wonder of the world.

On a winding Vienna side street, one museum has turned their windows into a monument to history’s peace-minded heroes.

Beautiful Austrian natural history museum with carved ceilings and row after row of ancient taxidermy.

The Habsburgs' royal collections of art and wonders.

Museum devoted to the artificial language of Esperanto.

Vienna's diversity-themed traffic lights were inspired by the Eurovision Song Contest.

The bugs crawling down the front of this office building are almost as big as a '68 VW Beetle.

A modern tower, symbolizing the legend of a golden egg on top of the tree of life.

In Kazakhstan, a colorful cathedral with many lives once survived the most powerful earthquake in the region.

This Soviet statue is based on a piece of propaganda that's been elevated to national myth.