This museum remembers the tough Mormon trek across America through an intriguing array of artifacts.

A hidden garden of stones engraved with scriptures, a Joseph Smith Sphinx, all carved by one man.

This series of Baroque passageways in Vienna's cultural center mix old architecture with modern art.

Museum devoted to the artificial language of Esperanto.

Handsomely crafted representations of our round planet.

The beautiful baroque library of the Hapsburg empire.

The final resting place for the remains of 143 Habsburg royalty.

Museum dedicated to the terror regimes of Hungary.

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

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

From Austrians to Nazis to Soviets, this historic Budapest fortress has a history as complex as the city itself.

The mummified right fist of a 1,000-year-old saint-king sits inside an ornate golden reliquary.

A museum dedicated to a secret military hospital hidden beneath a castle in Budapest.

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

Built in 1870 at the bridge that connected Buda and Pest, this spectacular incline railway was almost lost forever during World War II.

A trio of colossal statues spread across a Dallas neighborhood chart the emergence of a giant robot born of a locomotive and spilled gin.

This downtown Dallas art installation is always on the lookout.

Where the first "expert riders, willing to risk death daily" for the Pony Express were recruited.

Pillars made of 700 pieces of luggage climb to the ceiling of Sacramento Airport's baggage claim.

The California capital city once stood 10 feet lower than it does today.

This 19th century train workshop is a treasure trove of railroad history.

The capitol city's oldest existing cemetery.

The small cave that housed Tennessee's "first citizen."

This replica of the Greek structure is in the heart of Nashville.