Exquisite wall sculptures carved in secret by an early quarryman in an obscure corner of the Paris Catacombs.

A mechanized clock where a man fights off a dragon, crab, and rooster.

A stately palace has been converted into the world's largest cannabis museum.

This cemetery features modernist statues as strange as its name.

One of the oldest scientific gardens in Britain, containing more than 13,302 plant species in its core collection.

The fountain marks the area where hundreds of accused witches were burned at the stake.

The most iconic structure in Scotland has been home to bishops, colonels, and Sean Connery characters.

An ancient Scottish rock formation said to be the gravesite of a giant remains ensconced in legend and intrigue.

This dramatic landscape hidden on the Isle of Skye looks as though you've stepped into the magical realm.

One of Antoni Gaudí’s earliest buildings, built between 1886 and 1890 for the industrialist Eusebi Güell.

Possibly the oldest church in Barcelona, this basilica has its pagan and Christian mythologies all mixed up.

This solitary monastery may hold the remains of Vlad the Impaler (but probably not).

The second largest waterfall by volume in the U.S., Willamette Falls is outdone only by Niagara in the amount of water that is pushed northward.

Now home to a drinking establishment, this building has a macabre history.

The oldest restaurant in Portland serves fiery coffee cocktails and an astounding amount of turkey.

This indoor-outdoor Portland market is an ode to the lesser-known corners of Latin America’s varied foodscape.

This London plaque marks the spot where David Bowie's famous alien made his debut.

This shop and gallery is a modern-day cabinet of curiosities, unassumingly positioned along an urban thoroughfare.

This early version of the guillotine was used to execute the man responsible for its construction.

Sprawled across the Great Hall ceiling are various constellations and images relating to the zodiac.

Glasgow’s piece of the patron saint of love.

A 200-year-old collection of oddities and medical paraphernalia.

This 22-acre botanical garden is home to the largest collection of rhododendrons in the world.

The building features one of the last remaining free-floating spiral grand staircases in the U.S.