19th century pendulum and a clock restored by a rogue group of guerilla artists.

"In the Dark" Restaurant in Paris offers dinner in complete darkness.

France's national museum of scientific and industrial instruments.

A museum of magic with a Sadist past.

A favorite Paris bar for U.S. expats, including Gershwin, Hemingway, and James Bond.

This Parisian café sticks almost exclusively to an ethos of reuse.

High atop the Eiffel Tower is a small apartment built exclusively to entertain the science elite and make the rest of Paris jealous.

The very center of Paris is surrounded by a bevy of strange good luck rituals.

One of the oldest medical collections in Europe focusing on rare surgical instruments.

This charming cobbled backstreet is the most Instagramable street in Paris, much to the residents' annoyance.

Paris' linguistic guide to the international language of, yes, love.

This massive library holds what was once the largest book collection in the world.

This iconic Parisian bookstore doubles as the "Tumbleweed Hotel" for traveling writers.

Notorious artist squat renovated into legal studios.

The vast, legendary catacombs hold secrets much stranger than stacked bones.

The world’s only museum dedicated to baked beans.

A bright and wacky exhibit answers every question you may have had about human excrement, flatulence, and more.

The headquarters of Korea’s provisional government later became the site of a prominent statesman's assassination.

The former home of a foreign correspondent who reported on Korea’s independence movement has been restored and is open to the public.

The site of the last royal wedding in Korea.

Originally built by Japanese fishermen, this historic neighborhood has withstood the test of time.

The supreme shrine of the state.

The burial ground of two kings and a queen is now a calm city park in the middle of bustling Seoul.

Some of the freshest vegetables in Seoul are grown in a subway station.