The doodles of a genius line the walls of a secret room under the Medici Chapel, where they were hidden for nearly 500 years.

The only "Egyptian" pyramid in Europe and the legendary tomb of Remus.

This community on a small Venetian island has taken to painting their houses in bright neon hues.

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

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

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

This Venice bookstore has resigned itself to constant flooding by keeping its books in bathtubs and boats.

Architectureal fantasy quarter of Rome.

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

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."

Does this church in Naples hold the true tomb of Vlad the Impaler, the notoriously cruel figure who inspired Bram Stoker's Dracula?

This curious and colorful space invites visitors to delve into the hidden and often mind-boggling world of caterpillars.

This site contains preserved ruins and industrial remnants of Western Australia's mining heritage.

The oldest civic library in Italy can trace its foundation back to 1619.

The rocks exposed at Valley of Fire State Park also occur in a much less known but equally spectacular area a few miles to the southwest.

Opened in 1787, this old-world treasure is said to be the oldest restaurant in Copenhagen.

Where the people of Gozo have been doing laundry for more than six centuries.

The largest Spanish artifact built in the Philippines and one of the oldest underground reservoirs in the world.

An exceptional engineering feat that facilitates the migration of salmon upstream during their breeding season.

The smallest pub in Britain was once a cabinet of curiosities and it still has the dead cat to prove it.

This surreal art house looks like a geometric version of a small chapel.

Some wattle-and-daub, a Moorish mural, a glacial erratic, and a Giant named Gilbert.

This historic abandoned train station looks like a stop for ghost trains.