A hidden "place of interment for gentlemen."

Though many were skeptical at first, these animal-specific routes across the Trans-Canada Highway have been a major conservation success.

A controversial blue hoop has been puzzling freeway drivers since 2013.

The New Central Library is a masterpiece of contemporary architecture in the midst of downtown Calgary.

L. Frank Baum wrote part of the "Wizard of Oz" series in this wooden Victorian beach resort.

One of the largest trees of its kind in California.

The world's largest outdoor organ is played weekly by one of just two civic organists in the U.S.

Now housed in a museum, this giant pink elephant stood in downtown Seattle for more than 60 years.

A community gathering place that once housed half-ton tanks and the World's Fair.

Once a year, thousands of naked cyclists flood the streets of a Seattle neighborhood.

This Puget Sound military post has a long, turbulent history as a gateway to the Pacific.

The tech giant built three enormous glass orbs in Seattle so employees could work inside a rainforest greenhouse.

Though strikingly beautiful, Seattle's other railway station is now largely forgotten.

This bridge was constructed from the rubble of the infamous Bastille.

A surrealist timepiece by the artist of melting clocks.

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

France's most famous cemetery, with some of its most curious tombs.

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

This surreal statue brings a famous French novel about a supernatural cad to arresting life.

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

Down a cobblestone alleyway is a museum dedicated to Romanticism, with a secret garden.

This mountain trail inspired Nietzsche to complete his magnum opus.

The first geometric self-supporting spiral stairs in Britain are a truly beautiful sight.

The Denver airport is guarded by a 32-foot-tall sculpture of a demonic horse.