As can be expected from a centuries old church built in a canal city, the undercroft of this house of worship is beautifully flooded.

This 16th-century monastery has been turned into a surrealist architecture compound.

Rome's semi-secret peephole vista is also a former Crusader stronghold.

The glowing blue Nymphaeum of Emperor Tiberius.

Geothermal waterfalls in Tuscany.

The last moments of the ill-fated Pompeiians, frozen forever in plaster.

A master of trompe-l'oeil creates a stunning, tourist-fooling dome out of a flat ceiling.

The middle finger of modernity.

Renaissance villa and gardens complete with a tormented colossus.

Hundreds of lucky felines haunt the ruins where Caesar was murdered.

Pompeii's less famous neighbor is still revealing her secrets.

Thousands of well-dressed mummies below a monastery.

An Italian crevasse filled with abandoned buildings gives visitors a look at the world without humans.

The crypts of Capuchin friars decorated with the bones of over 4,000 friars, including an entire "crypt of pelvises."

A submerged archeological park still holds the wonders of a Roman Sodom.

A 16th-century horror show built in a lovely Italian garden.

Former estate of Lenin, now home to his death mask.

This Russian locomotive museum was once devoted just to Lenin's funeral before expanding to encompass Moscow's entire train history.

A 360 degree battlefield experience.

Hidden in a metro shop under a shopping mall, this small museum tells the story of one of the world's largest urban transit systems.

The tallest hotel in Europe.

Moscow's most popular cemetery includes the graves of numerous cosmonauts.

A sculpture park of the tossed aside relics of the USSR, from Stalin to a massive Soviet emblem.

Back in the tiny USSR.