The two locations of this landmark ice cream shop scream pure Americana nostalgia.

This Native American settlement dates back to the Pueblo II period.

These azure waters were thought to lead to the Mayan Underworld.

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

This staircase in a lush tropical grotto was built by enslaved laborers and renamed to honor Queen Victoria's role in ending slavery in the British Empire.

A park where people have been going to feed friendly pigeons since the 18th century

This colorful gate stands as an entrance to the walled city of Old San Juan.

You can soak in private hot tubs infused with beer while pouring unlimited Czech beer from your own tap.

Countless grotesque faces stare out from this eerie Prague art wall.

Once the home of a hermetic monk, this cave now houses a small church.

A Trabant car, a kangaroo statue, and a plethora of plants take over this abandoned-factory-turned-bar.

This Hungarian castle was built out of cardboard and wood until it proved so popular that it got upgraded to stone.

A series of caves under Castle Hill that once held the prisoner Vlad Tepes, better known as Count Dracula.

This Budapest bar allows drinkers to leave their mark on the walls, floor, and even ceiling.

A sculpture of a beloved local figure, who tipped his top hat to everyone he passed on the streets of Bratislava.

An unconventional memorial to the women burned as witches in Bratislava.

Launched by Napoleon's soldiers more than 200 years ago, a cannonball remains embedded in the tower wall.

This Slovakian statue of an emerging sewer worker might just be a bronze peeping tom.

In the middle of a Vienna square, Roman ruins dating back some 2,000 years are on display.

The first modernist church in Europe.

A neo-Gothic church built to thank God for saving the Emperor of Austria from an assassination.

Built to give thanks for the passing of a plague epidemic, this cathedral is a one-of-a-kind architectural hybrid.

The crypt of the imposing Stephensdom holds royal intestines and thousands of skeletons.

The statue of a cursed knight is said to come to life every 100 years.