Stockholm's decidedly unique public transit system has doubled as the world's longest art gallery for decades.

The celebrated eyesore created by starry-eyed sweethearts.

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

An "inside out" building in the historical center of Paris, featuring Europe’s largest modern art museum.

A horde of stray cats rule in this secluded Parisian cemetery under a bridge.

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

The oldest stone house in Paris was built by its most famous alchemist.

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

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

Not for the faint of heart, this long pedestrian bridge rewards those who brave the wobbly walk with a beautiful view.

This Canadian city is actually two-in-one, even if they only respect the timezone of one side.

Webcam that broadcast the hatching of Bald Eagles to millions of viewers.

Possibly the world's largest coin stands just outside of a Canadian science center.

Profile of a sleeping person 4km long in 250m high cliffs.

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

This natural wonder is disappearing at an alarming rate.

A neutrino detector built into the largest man-made underground cavity in the world.

Niagara Falls holds a special place in Nikola Tesla's history, so they put a statue on it.

The Incredible Hulk, Yoda, Mulder and Scully, and many many others watch over the mean streets of Toronto.

One of the Seven Wonders of the Modern World holds the world's tallest metal staircase.

With well over 130 falls and cascades to brag about, Hamilton, Ontario has earned its stripes as the waterfall capital of the world.

This Italianate house was the childhood home of the prominent Canadian painter, Emily Carr.

Greenery cloaks this serene sculpture inspired by the famous Lost Gardens of Heligan.

This historic Victorian hotel has a scandalous history of affairs and murder.