Yugoslavia's biggest underground airport lies in ruins.

A wonderfully strange collection of 500+ stuffed frogs doing people things.

A musical instrument played by the sea.

A chain of 16 wondrous lakes formed as a result of the gradual dissolution of soluble layers of bedrock.

The hairpin turns in this mountain road take the shape of a letter—is it a coincidence or a symbol of love?

A curious cave church carved into the face of a cliff.

These historic defenses ensured the city within would survive hundreds of years of occupations, sieges, and invasions.

A curious little museum dedicated to the furry feline in the cat haven that is Old Town Kotor.

With a floor made of thick glass, this observation deck offers a full view of Sunwapta Valley's mountains and rivers.

This outsider art paradise is filled with dinosaur sculptures crafted from recycled machinery.

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

The natural hot spring that was integral to the creation of Canada's first national park.

A mysterious taxidermy man-beast of the seven seas.

The granite head appears to be deep in thought and half buried in the ground.

A small and quirky museum hidden inside a fence.

A rescue facility that caters specifically to wolf-dog hybrids, and educates about these unique animals.

Climb a set of vertiginous stone steps to the top of this impressive ancient edifice.

A psychedelic labyrinth on the San Francisco bay.

A 1920s home transformed into an immersive art experience, where every room is a portal to another realm.

A unique local art exhibit that has continued to grow since 1989.

Acres of natural wonders left behind by a socialite-turned-gardener.

Like stepping into a spooky fairy-tale, this shop carries the dark ideas of artists and other makers.

Train tunnel running underneath Quebec City.

Concrete pillars provide a beautiful canvas for Quebec City's graffiti artists.