The world's tallest bridge is also possibly the most elegant.

The abandoned "Red Star Train Graveyard" is the final rusting place for precious artifacts of train history.

Sleep in a climate-controlled plastic bubble for the night.

For one day every month Barcelona's Estació de França transforms into a market for model trains.

This beautifully designed star-shaped fort was the premier defense system of the late 1500s.

A floating cat sanctuary on an Amsterdam canal.

High atop the Eiffel Tower is a small apartment built exclusively to entertain the science elite and make the rest of Paris jealous.

A memorial to the tens of thousands of Irish who fled to North America during the Great Famine.

A flying saucer has landed for good in the middle of a tiny Canadian town.

The world's first cruise ship-shaped hotel is perched atop a cliff.

This unique bridge physically lifts a piece of the road into the air to let boats pass by.

This $3 million model train takes you through Chicago, Seattle, and the thousands of miles in between.

A museum celebrating the Canadian forces that liberated Belgium from the Nazis replete with battlefield miniatures and multiple Gardens.

North Korea's massive "hotel of doom."

Enormous pendulum helps keep Taiwan's tallest building from swaying.

Beijing's expansive subterranean hiding spot now crumbles away as a tourist destination.

This experimental utopian "city of the future" in rural India may hold a dark secret.

This beautiful Japanese garden is a memorial to the samurai who literally wrote the book on business as martial art.

This unusual structure may be on its way to becoming a cultural landmark in Toronto.

When the big city meets the edge of the frontier, log skyscrapers are born.

The wreckage still sits at the exact spot the plane crash-landed in 1945, carrying 1,000 pounds of explosives.

This Canadian monument to the man who invented the telephone allows visitors to get up close and personal with the artifacts of his life.

This decommissioned DC-3 now forever points into the oncoming wind.

It took over 100 years to decode this enigmatic epitaph for two buried brides.