This bunker in northern France was built by Nazi German forces with the intention of launching up to 50 V2 rockets at London each day.

This Corsican Neolithic site is full of pre-Roman megalithic structures that may or may not be penises.

The world's largest solar furnace uses 10,000 mirrors to concentrate the sun's rays to generate power.

A suspended footbridge allows for traversing this gorge carved through the French Alps.

A centuries-old complex of hand-dug stone chambers has sheltered locals in times of trouble.

Hundreds of prehistoric stones, arranged in perfect lines in a French field.

Historic medieval fortified city in southwest France.

Ancient paintings known as the "Sistine Chapel of Cave Art."

This French ghost town from World War II has been left as a memorial to German atrocities during World War II.

The easternmost town in Alaska can only be accessed from Canada.

Giant lamp houses the tourism information center.

A 19th-century perch for spotting sailing ships now boasts one of the most iconic views in the Southern Hemisphere.

The Victoria-era quarantine station for Sydney.

This trio of Australian rock spires may have inspired aboriginal legend or just modern tourism.

This historic observatory contains the world's oldest refracting lens telescope.

Come for the flowers, stay for the bats!

The only pollutant in the clear blue water is sunscreen.

This great Pōhutukawa tree is believed to be the largest and oldest of its kind in the world.

A quirky hardware store filled with museum-worthy cars and motorcycles, including a motorcycle that set a land speed record in 1967.

A giant chain sculpture that plays on the Māori myth that Rakiura (Stewart Island) is an anchor stone chained to the South Island.

A winding staircase that appears to lead to nowhere is actually a diving platform into the Wellington Harbour.

Quotes and poems etched on stone plaques are hidden along this waterfront walkway.

The highest concentration of Art Deco buildings in the world.

The largest model carrot in the world.