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

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

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

Jesus' footprints and the first catacombs in the world.

Installed in an act of one-upsmanship, the annual sundial in this church is also a symbolic victory for the Gregorian calendar.

A fairy tale castle in modern Rome.

A Nesting Doll of Churches.

One of seven Jewish catacombs in Rome and one of only two open to the public.

This psychedelic tourist trap is a leisurely descent into madness.

A highly symbolic tower in honor of Supreme Leader Kim Il-sung's personal philosophy.

Once the most densely populated place in the world, this island is now a ghost town.

Various forms of phallic art decorate this hill in commemoration of legendary local tragedy.

An exquisite tunnel of cascading flowers.

This Japanese national treasure was originally built in 593.

This high-design church is made up of two dizzying spirals meant to evoke the weaving together of marriage.

A Japanese corporation has turned this small island town into living modern art gallery.

An old vending machine serves up unpredictable beverages from its seemingly magical insides.