This picturesque horseshoe weir was first built in the 1600s to prevent flooding in the town of Bath.

This amazing 15th-century mural remained hidden in plain sight for centuries.

The bombed out remains of the old church were kept intact next to the new one, as a reminder of the futility of war.

This shining multicolored metro station deep under Naples is said to be the most beautiful in Europe.

The best place in the world to buy tinned fish.

A king's pet, a pope's gift, an artist's inspiration, and a tragic shipwreck.

One Portuguese poet described this cape, the westernmost point in mainland Europe, as "where the land ends and the sea begins."

This unreal Portuguese palace looks as though it's made from a pile of different castles.

This unique architectural wonder is also tied to one of the 20th-century's most renowned writers.

Elaborately carved to showcase the glorious wealth that the age of exploration brought to the Portuguese empire.

The walls of America's oldest masonry fort famously "swallowed" cannonballs.

This abandoned prison castle has become an imposing gallery of graffiti art.

A roaring, awe-inspiring double cascade of icy water flows through woodland Oregon like something out of a Tolkien novel.

L. Frank Baum wrote part of the "Wizard of Oz" series in this wooden Victorian beach resort.

The largest and most well-preserved petroglyph site in the Verde Valley.

Steadily reminding Czechia of its past.

This walkway is so narrow it needs its own light to stop pedestrian traffic jams.

A turn of the century building boasting some of the most beautiful art nouveau architecture in Prague.

Macabre astrological automaton clock dating to the late 1400s.

Some of the greatest minds in the history of Hungarian art and science converged in this café.

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

Baroque celebration of the end of the Great Plague of Vienna.

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

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