The name of this ancient Indonesian temple translates as "Elephant Cave" but it could be more accurately called "The Hellmouth."

One of the holiest places in the region, devotees come to Tirta Empul to bathe in the holy spring water.

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

Isolated atop this Balinese sea crag is a lovely Hindu temple that is said to be guarded by sea snakes.

A favorite with sightseers and locals alike, this Norwegian funicular provides easy access to a stunning view of Bergen and its environs.

A concrete mushroom that divided Stockholm residents for nearly a century.

Sweden's oldest animated sign is still lighting up the skyline today.

The discovery of an old wall led to the creation of this fascinating museum about the city in the Middle Ages.

The rusted hull of a WWII German destroyer pokes above the surface in a Norwegian fjord.

Dine on food tied to Viking history and legend at this subterranean Stockholm spot.

This pair of unsuspecting buildings are in fact the very first modern skyscrapers in Europe.

One of the world's first dedicated bank buildings in the world is now the oldest one.

There are hidden patterns on the subway seats of some Stockholm metro cars.

Tucked away in a downtown Stockholm park are the remains of a World War II defense position.

A 130-year-old urinal is the oldest of Stockholm and perhaps all of Sweden.

The Swedish flag over this small naval fort signals that the nation is at peace.

This giant subway sculpture celebrates the fruit that inspired the theory of gravity.

It is said that each of the white stones in the red facade of this medieval house represents the head of a murdered Swedish noble.

The world's largest model of our planetary system.

The library's graceful rotunda is like a bibliophile's temple.

An illuminated manuscript comprising the life's work of a lone monk, inexplicably decorated with a portrait of Satan himself.

The yawning maw of this pagan visage is said to bite off the hands of liars.

The skull of the patron saint of lovers lies in the Basilica di Santa Maria in Cosmedin—maybe.

This beautiful park on the outskirts of Rome protects the ruins of two colossal ancient aqueducts.