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

The underground sanctuary of a mysterious ancient cult.

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

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

Traveling this mountain pass reveals quaint stone buildings, stunning Irish scenery, and a bridge said to grant wishes.

The giant scales in this museum can still tell if someone is one of the devil's brides just by weight.

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

The mysterious empty cupola behind the monumental arch points to an ancient prophecy of Delhi.

This opulent 16th-century Maharaja’s palace is a unique mix of Hindu and Muslim designs.

Known as the leaning temple, the sacred structure has somehow developed a severe nine-degree slant.

A startling, centuries-old subterranean marvel hides in plain sight.

An ancient iron pillar in Delhi that seems to be rustproof.

More than half of this Indian palace is drowned but it looks all the more spectacular for it.

The 953 windows undoubtedly make this the world's most beautiful screened porch.

Thousand-year-old Viking runes adorn an ancient Greek lion at the entrance to the Venetian Arsenal.

Those who own or stay at this 500-year-old, allegedly cursed house often meet terrible fates.