This French chateau is home to the world’s largest private collection of fighter jets.

One of the world’s largest collections of petroglyphs records 2,000 years of human activity.

This ancient sword lay in a waterlogged tomb for 2,500 years, but managed to remain relatively untarnished and impressively sharp.

This lake’s emerald green waters are a spectacular sight, but it’s not a great place for a swim.

This colorful but controversial ceiling has been likened to a 21st-century Sistine Chapel.

Its eclectic exhibits range from the world’s first motorcycle to Luke Skywalker’s Land Speeder.

This modern, multimedia museum takes visitors on an evolutionary journey back in time.

At the right time of day, sunlight floods through the roof of this cave and illuminates the small pavilion hidden within.

This remote Moravian mission brought Christianity—as well as devastation—to the Inuit people.

Surrounded by a smudge of dark earth, this isolated volcano sits in stark contrast to the surrounding Sahara.

You can walk up Thailand’s naturally non-slip waterfall.

Soldiers carved these regimental badges into the chalk hills in remembrance of those who died in World War I.

This 19th-century island fort built to protect against an invasion by sea.

A monument to the “unrecognized dead” of the tragic 1876 train crash.

The frozen bubbles that form on the icy surface of this Canadian lake contain enough methane to create a small explosion.

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

This volcano rises like a giant anthill from the plains below, with a road spiraling up to the rim.

The highest pedestrian bridge in Singapore looks like a series of undulating waves rising between two public parks.

This strange portrayal of the state's first lieutenant-governor literally stands on its head.

This unique bridge curls up like a caterpillar to let boats pass and then unfurls again to span a small canal.

The world’s first statue of the late Apple co-founder.

A tribute to all the green-thumbed workers who tend London’s public parks and gardens.

The world's tallest statue of a woman wields the world's tallest sword and is at risk of toppling over.

The world's tallest circular building is loaded with symbolism, but many just see a big donut.