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.

This modest marker near Notre Dame identifies the very center of Paris.

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

The absurd creation is a compulsory destination for selfies in Buffalo.

The history of radiation is on safe display at the foot of a radiation science laboratory.

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

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

An icon of the Battle of Britain is frozen in flight in a grand Victorian museum.

A strange rock with a sinister reputation lurks within the crimson waters of this Scottish glen.

This castle was established by the 4th Duke of Montrose and is connected to the Buchanan Clan.

One of Scotland's most important modern structures, it just made the '100 Most Endangered Sites' list.

Hidden in an ordinary Midtown building is a one-room museum dedicated to the greatest escape artist.

The original toys that inspired the beloved children's stories are on display at the New York Public Library.

The home, museum, and death site of Kodak's influential founder.

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

Displaced highlanders would take shelter from the wet Scottish climate under the large walled bridge at Glasgow Central Station.

This stately monument has been wearing a traffic cone hat for decades much to the delight of the locals.

Museum dedicated to the struggles of the disabled.

A gigantic 10-foot tall stone man.

A collection of the best toys ever made inside a museum devoted to play.

One of the largest festivals of flowers in North America takes place, appropriately, in the Flower City.

Dedicated to the art and science of glass in equal measure, this space is as much laboratory as museum.

This art center is way beyond your average pumpkin-carving operation.