Sacred waters rescued from the wrath of a volcano.

This Balinese sea temple is thought to be guarded by the hundreds of monkeys that live around it.

Bali's remote "gateway to heaven" is one of the most sacred places on the island.

Hindu temple of the dead home to hundreds of long-tailed macaques.

Hundreds of Buddhas in a re-discovered Indonesian temple.

18th century opera in its original splendor.

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

Museum dedicated to the terror regimes of Hungary.

This strange bovine gargoyle is said to have been put in as a passive aggressive form of revenge.

A merchant court dedicated to the fictitious King Arthur is heavily adorned with bizarre Renaissance art.

Real bones which are said to have belonged to a Polish dragon.

Legend has it this fountain built to symbolize the Pope’s power hides a strange secret concerning Neptune's manliness.

A mysterious ancient elephant said to possess magic powers is now the symbol of a Sicilian city.

A copy of the famous statue can be found in this Florence piazza, along with one of the most breathtaking views of the city below.

Over 100 towers were built in Bologna during the Middle Ages, but only 22 survive.

A sulfuric hellscape in southern Italy.

A labyrinth of ancient tunnels hidden below the city holds the ruins of 2,500 years of history.

The iconic boulevard is the perfect place to catch sight of a bicycling skeleton, a levitating Satan, or a chef with his head stuck in a pizza.

Construction of Barcelona's iconic (but controversial) church is expected to be completed in 2026—a century after the death of its architect.

The palace window through which Protestant nobles flung two Catholic regents, thus sparking the Thirty Years' War.

A surreal statue honoring Prague's favorite literary son.

Around 100,000 bodies are buried below the medieval headstones, many of which mark graves with multiple bodies stacked up to 12 deep.

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

Macabre astrological automaton clock dating to the late 1400s.