This odd Chilean waterfall-cano hotel must be entered via a rope bridge.

This picturesque mansion has gone from opulent ruin to nature museum.

An explosion of natural color known as "the river that ran away from paradise."

A dangling church built over a Colombian gorge.

Berlin's beloved bear is immortalized at the Museum für Naturkunde.

Berlin's natural history museum houses the world's largest mounted dinosaur and the late beloved polar bear Knut.

A monument to the man who almost killed Hitler.

A towering monument to war, located on a beautifully peaceful hill.

A state-of-the-art medical facility from the Imperial era is now a derelict ruin.

This classic restaurant features a gorgeous mirror-clad room.

A slice of central Asia in the middle of Berlin.

A brush maker used his factory to protect blind Jews from the Gestapo.

A narrow passage next to a cafe leads to a courtyard exploding with murals, tags, and paste-ups.

Beneath the impressive baroque cathedral that rises from the center of Berlin lies the largest collection of Prussian royals in the world.

Remnants of an exploded schooner and wrecked submarines form a breakwater.

This wooden hotel is a temple to German sustainability and forest conservation.

This contentious squat has stood through fire, violence, and government intervention as a hotbed of leftist protest.

Hamburgers are intensely proud of their tunnel beneath the river.

Once the tallest building in the world, this abandoned church is now a monument to the destruction of WWII.

The first Russian Orthodox church in the Catholic city of Rome in almost a thousand years.

An alchemist's "magic door" stands in the middle of a Roman park.

The Pope’s secret escape route.

More sculpture than building, this architecturally significant temple was built on the spot of Saint Peter's crucifixion.

Gigantic mosaic sculptures of the figures on Tarot cards fill this colorful Tuscan garden.