The lost library of Alexandria, revived as a spearhead of cultural preservation.

An Orlando museum houses the world’s most comprehensive collection of work by Louis Comfort Tiffany.

Explore the atmospheric ruins of an abandoned convent in the dense forests of Mexico's first national park.

These abandoned grain silos and tunnels are an urban exploration dream.

The oldest working mechanical clock in the world.

Numerical symbolism abound at East Asia's oldest observatory.

The world's largest sundial can cast a shadow more than 1,600 feet long.

The world's second-largest sundial, made entirely out of stone.

An ancient instrument used to measure the waters of the Nile so Egyptian farmers would know whether to expect famine or flood.

A modern day curiosity cabinet.

America's most famous museum of medical oddities is home to the remains of Albert Einstein's brain.

Las Vegas's very own 40-foot-tall fire-spewing praying mantis.

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

This giant Cold War satellite dish has become a symbol of Trinidad's need for sovereignty.

A fantastical bed and breakfast with magically unique rooms.

A 100-year-old Japanese command center is now a unique underground university walkway with periodic exhibits.

Mother Nature outdoes herself with this stunningly beautiful set of caves carved into marble.

This tombstone marks the spot where the legendary British spy met his end.

Prowl through this sprawling bazaar under a massive Soviet-era dome for delicious eats.

A grumpy old water goblin guarding an old mill on the Devil’s Stream in Prague.

These warring psychedelic crags commemorate an unsuccessful military operation.

This bizarre residential building is the masterpiece of Von Jour Caux, the “Gaudí of Japan.”

Spend the night in this former asylum for the incurably insane, which claims to be one of the most haunted places in the United States.

Looming communist pillar with a Czech twist.