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

An abandoned castle owned and ignored by Masons carries a cursed history.

An eerie, derelict amusement park in Berlin.

Remnants of a storybook amusement park hidden behind a strip mall.

The intricate stonework of Machu Picchu serves as a testament to Incan engineers.

Rippling sand dunes frozen in the Arizona rock.

A theme park that suffered massive flooding during Katrina was abandoned, and now proves irresistible to trespassing explorers.

On Japan's Tashirojima Island, cats are king.

This preserved puppy was an adorable beacon of charity.

The final resting place to 300 Victorian-era pets hides inside the city park.

An alleyway plaque is all that remains of the independent Texas' envoy that forgot to pay their rent for over a century.

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

The final resting place of the poets Shelley and Keats.

The underground sanctuary of a mysterious ancient cult.

The skull of the patron saint of lovers lies in the Basilica di Santa Maria in Cosmedin—maybe.

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

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

Architectural monsters are devouring this palace's every door and window.

Bell tower juts out from a village buried under a lake.

Small on the outside, big on the inside, this church is an astonishing act of visual deception.

"The prettiest love letters in the world" ... or so said Lord Byron.

The giant skeleton sculpture is surprisingly well-traveled.

This giant middle finger statue sends an unambiguous message to Italy's bankers.

Giant, pink stuffed rabbit on an Italian mountain.