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

Historic medieval fortified city in southwest France.

An overlooked marble is the only surviving in-place 18th century example of the measurement that changed how we define distance.

Site of a classic 19th-century physics experiment to prove the earth is rotating.

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

The vast, legendary catacombs hold secrets much stranger than stacked bones.

The sound of swaying stalks in this stunning grove has been named a governmentally recognized sound.

Gladiators battle and chariots race daily in the ruins of a once-great Roman city.

An ancient capital city that dates back 3,000 years and harbors many surprises.

This beautifully historic Bahrain fortress might not be the most popular attraction around, but that might make it all the better.

This centuries-old tree tells an unusual tale of vegetation and fertility in the desert.

An unusual and powerful memorial in which earthquake victims are remembered by empty white chairs.

After the devastating 2011 earthquake, historic Christchurch begins to recover, starting with the pop-up Re:START mall.

Major tourist destination known for its bubbling mud-pools and hot thermal springs.

Largest Kauri tree in New Zealand.

The world's only complete colossal squid specimen is on display at the Te Papa Museum.

These two delightful animal-shaped buildings host a visitor center and wool shop.

The "punniest place on Earth” has nearly as many bull-themed puns as it does people.

This strange geological landscape erupts with sudden bursts of water.

Tubing through a cave lit with glowworms is a magical underground experience.

This sheep farm has been forever transformed since being built for “The Hobbit” film series.

Numberless clock creates a meal of time for the dreaded, insectile Chronophage.

An engraved stone in a village church claims to be the grave of a minuscule folk legend.

The near loss of the stately fireplaces at this medieval castle spawned some of Britain's most crucial historic preservation laws.