A Mexican Romeo-and-Juliet-esque legend has given this super-narrow alleyway a reputation for romance.

A monument celebrating the idea of reaching inaccessible places.

A Balinese resort, empty and trapped in time.

This massive chapel in the middle of the Indonesian forest is both haunting and fowl.

One of the oldest restaurants in the Seychelles.

A strangely forgotten claimant to the much contested title of "Source of the Nile."

Hoax, mistake, or evidence of dinosaurs in human times?

Derelict airplane bodies serve as both home and income for three Thai families.

A unique Tuscan hideaway acts as an art mecca as well as a hotel.

Production site for handmade clay bricks.

The Vatican's secret porn-festooned bathroom was painted in erotic murals by one of the greatest artists of the Renaissance.

At the crypt of St. Mary of Eulogies and the Dead you are left alone to ponder mortality among piles of skulls.

One of Catholicism's four major basilicas has a series of papal portraits that are said to predict the end of the world.

Gods clash with machines in a power plant regenerated as a museum.

The final resting place of the poets Shelley and Keats.

A fairy tale castle in modern Rome.

A Nesting Doll of Churches.

This Roman arch marks the location of an ancient gate at one of the Seven Hills of Rome.

Stone memorial that's said to predict the death of the pope and the site of the Cadaver Synod.

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

Jesus' footprints and the first catacombs in the world.

Wondrous sandstone hoodoos where Native Americans collected clay for pottery, 9,000 years ago.

In this historic region, homes and churches are carved into ancient volcanic rock formations.

A gargantuan crystal kingdom.