A unique flight of canal locks that owe their form to 19th-century cost-saving measures.

Take a ride on antique streetcars from across Canada.

After serving in World War II and picking up Apollo astronauts, this aircraft carrier has been turned into a museum overlooking the San Francisco Bay.

The biggest and deepest Cold War bunker open to the public can be found in southeast England.

In the land of the Light Brigade stands a testament to the Cold War.

These former Cold War launch sites have been preserved for tourists to see where the button might have been pushed.

Part of a secret 1970s nuclear defense program is now open to the public.

This disused Cold War bunker has been restored to all of its early 60s glory.

Canada's subterranean Cold War museum has doubled as a movie set.

Once the future of underwater combat, this old sub is now open for visitors to muck around in.

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

This open-air heritage museum illuminates centuries of historic English life from a West Sussex village.

Inside this old train depot resides a multi-line model train covering western North Carolina.

Local legend says Isaac Newton built this footbridge without any screws, bolts, or nails.

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

A hidden path at the National Theatre lets you look behind the scenes of the latest productions.

This museum of Viking vessels allows visitors to take a replica out for a spin.

One of the highest mountain passes in Europe has been ranked among the best driving roads in the world.

Eat your Big Mac in a DC-3.

This Boeing KC-97 tanker is now a restaurant for aviation lovers.

In the Hugging Tree Forest, lingonberry marshmallows, hot chocolates, and the best campfire lattes north of the Arctic Circle come to you.

One of the last remaining railway viaducts equipped with a transporter ferry.

The stickered marker pinpoints where the only maintained road in the United States crosses into the polar region.

A showcase of engineering might that was also symbolic of westward expansion.