The seawater playground of gilded-era San Francisco burned to the ground in 1966.

A sharp bend in a dramatic river canyon cut through red rocks.

As the highest point in the Mid-Atlantic range this stratovolcano offers spectacular views.

Bordered by forest on three sides and the ocean on the other, the Great Dune of Pilat is the highest sand dune in Europe.

A Roman monument to their own civil engineering prowess.

A giant portrait of an ancient king looms over the river.

A marvel of Byzantine engineering under the streets of Istanbul.

Among the ostentatious rococo ornamentation of this church, an image of death cuts the life-thread.

Venice's island of the dead.

A historic London cemetery now serves as a nature park incorporating gravestones & memorial statues.

Terrifying derelict military hospital once housed a recuperating Hitler.

The resting place for anonymous victims of the Danube's dark waters.

A spherical "micro-nation" in the heart of Vienna.

Macabre museum devoted to historical Viennese murders.

Legends surround an ancient tree trunk riddled with nails for good luck.

The crypt of the imposing Stephensdom holds royal intestines and thousands of skeletons.

A small museum filled with over 1,000 clocks, and one particular clock calibrated to run until the year 9999.

Beautiful Austrian natural history museum with carved ceilings and row after row of ancient taxidermy.

One of the ghostly stops along Route 66.

The abandoned village of Skarð aptly illustrates the idiom "Don't put all your eggs in one basket."

The Bauhaus-style former industrial complex is considered the world's most beautiful coal mine.

A Belgian self-built tower inspired by the Bible and ancient civilizations.

This ghost town in Belgium will lose its street art when it ceases to exist.

Housing the groundbreaking maps and globes of Gerard Mercator.