An Irish church where an 800-year-old mummy is reaching out of his coffin as if to shake hands.

More sculpture than building, this architecturally significant temple was built on the spot of Saint Peter's crucifixion.

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

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

A collection of objects supposedly singed by the hands of souls in purgatory.

This ritzy Italian market is built around a statue of an unforgiven heretic who was burned for his belief in an endless universe.

The yawning maw of this pagan visage is said to bite off the hands of liars.

A Nesting Doll of Churches.

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

St. Francesca Romana, patron saint of drivers, resides in the church she founded.

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

This ancient Roman prison is decorated with an upside-down cross not as blasphemy but as saintly tribute.

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

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

Statue in Salem of the woman who starred as the witch Samantha in the sitcom "Bewitched."

The only structure left with direct ties to the Salem witchcraft trials of 1692.

Largest necropolis in the Mediterranean.

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

This hill made entirely of ancient Roman jars was simply a garbage dump to the people of the time.

Public outcry led to this bridge's unique character which celebrates a giant frog battle and also sewing.

World's largest porcine hairball sits in a collection maintained by Benedictine monks.

One New Hampshire alleyway has become home to a public gallery of feline art.

"the sweltering inhabitants of Charleston and New Orleans, of Madras and Bombay and Calcutta, drink at my well . . . The pure Walden water is mingled with the sacred water of the Ganges."

The ghost town that was one of New Hampshire's first settlements now exists as a park detailing its history.