One of the few places in the world where visitors can walk alongside fossilized tracks from 80 different dinosaur species.

The stunning interior of this Gothic church is covered in ornate gold details.

This giant geoglyph of mysterious origins is now the site of neo-pagan rituals.

A neo-Gothic mansion now houses a wunderkammer of analog tech that hits on all the senses.

The crypt of the imposing Stephensdom holds royal intestines and thousands of skeletons.

A colorful narrow alley in Cuba is full of street art and sculptures made of found objects.

A museum dedicated to the history of a terrifying secret police is now held in their former headquarters.

Exquisite wall sculptures carved in secret by an early quarryman in an obscure corner of the Paris Catacombs.

A piece of the iconic wall found an unlikely new home in a Vegas bathroom.

A 141-foot wave of crashing lumber guards the entrance to the Grand Place in Mons.

The abandoned "Ghost Mansion" was left to decay in the mountains of Northern Italy.

Nuclear waste experts study this prehistoric crater lake to envision landscapes one million years in the future.

A whimsical brother of the nearby Fallen Angel statue takes the falling part quite literally.

This set of mysterious petroglyphs in the Peruvian jungle could shed light on centuries-old activities in the region.

Twelve grave-faced marble angels guard the emperor's tomb at Les Invalides.

Explore 400,000 years of humans' "battle against darkness" in this offbeat but thorough lamp museum.

Iran's colorful terraces are a rare geological masterpiece.

The watery entrance for condemned prisoners heading to the Tower of London is still visible along the Thames.

The "stairway to heaven" lookout tower was built to resist weather, arson, and the laws of physics.

A collection of pianos and more guaranteed to delight anyone interested in music history.

The only microgravity tower in Europe can produce nine seconds of weightlessness.

The 2,000-year-old Roman columns are hidden within Barcelona's Gothic Quarter.

A well-restored ancient archaeology site gives a real feel for life during the Roman age.

A stunning two-story timepiece within a medieval Brick Gothic church.