Profile of a sleeping person four kilometers long in 250-meter-high cliffs.

This impressive working clock made of 16,000 plants changes its flowers twice a year.

These powerful, if squat, Canadian waterfalls flow in different directions depending on the time of day.

This massive mall has hundreds of shops, an amusement park, and a history of deadly amusement attractions.

This natural wonder is disappearing at an alarming rate.

A surviving remnant of the thick ice mass that once mantled most of Western Canada's mountains.

Louise Bourgeois' 30-foot-tall steel spider sculpture.

Few other hotels can rival the grandeur of the Castle in the Rockies.

Soaring over the Niagara Whirlpool since 1916.

Designed by Buckminster Fuller, this relic of the 67 Expo survived fire and ice.

A 98-room castle in the middle of Toronto that bankrupted a 19th century electricity multimillionaire.

An abandoned whaling station on an active volcano offers hot springs in Antarctica, surrounded by ruined giants of industry.

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

The water-powered carriages are long gone, but for over a century this funicular railway has been the fastest route to the highest point in Paris.

This statue was given to France by the United States to commemorate the centennial of the French Revolution.

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

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

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

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