This quiet, unassuming spot in Budapest was the birthplace of the bloody 1956 Hungarian Revolution.

This sculpture honors the man who was known as the "Righteous Among the Nations."

This church, better known for its weeping portrait of the Virgin Mary, also houses the world's oldest existing piece of taxidermy.

This half-finished "city of toys" was almost Italy's own Las Vegas.

An eclectic collection of highly specialized bicycles once used by artisans for their specific needs.

Six paintings reminding you that death is integral part of everyday life.

The elliptical citadel resisted the advance of the mighty Ottomans several times, thanks to the military prowess of the "Dragon of Albania."

A relic from the Industrial Revolution got a second life as a contemporary performing arts space.

The only museum with its curator—and her pets—buried inside.

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

This Roman statue is missing a limb from when the Venetians stole it from Constantinople during the Crusades.

Go inside to really appreciate this 500-year-old technological masterpiece.

A Belle Epoque bordello turned into a themed love hotel.

This demon atop the Notre-Dame de Paris looks utterly bored.

A font of vintage porn on the silver screen.

An antique curios dealer and hybrid taxidermist.

The tradition of open-air secondhand and antiquarian bookselling in Paris dates back to the Renaissance.

A mud statue stands in the dark tunnels, seeming to hold up the weight of the city above.

Dedicated to the history and culture of smoking, this small museum now includes a vape lounge.

The historic Masonic Lodge in which the first-ever female Mason was initiated.

A 400-year-old church covered floor to ceiling in ex-voto offerings from the faithful.

The industrial architecture honors the laborers who brought the Exposition Universelle of 1900 to life.

This structure atop a craggy cliff in one of the most beautiful parks in Paris boasts an unbeatable view.

An unusual number plate signifies the building's saucy past.