This "City of Books" holds a museum, library, and the complete personal book collections of five of Mexico's greatest thinkers.

A mysterious pillar in an ancient burial chamber is said to predict how long you have to live.

Hear, smell, see, taste, and touch history at this immersive Civil War hospital.

This unique sculptural clock transforms into a periscope every hour.

An incredibly random collection of wax figures is displayed in a shopping center walkway.

A circus of light and sound forms a sensory ode to an iconic train that will never pass through town again.

A hidden tunnel leads to a medieval queen's shrine buried beneath a parking lot.

The awe-inspiring ship from the golden era of cruising has an incomparable history and a reputation as one of the world’s most haunted places.

Local lore says two enemy dragons live within these breathtaking mountain lakes.

A colorful street named for the legendary Australian rock band.

Peek inside restored planes at this off-the-beaten-path collection of aviation archaeology.

This 11th-century temple gave rise to the word "juggernaut," as well as some mysteries that defy scientific explanation.

Rusty pieces of metal jutting out of a breakwater are all that's visible of the 12,500-ton ocean liner that capsized just off the beach.

A spectacular rainbow of stained glass makes the "Pink Mosque" one of the most beautiful in Iran.

This 1830s store is believed to be the site of Harriet Tubman's first stand.

The romantic botanic tunnel feels like a well-kept secret.

Amsterdam's former hotspot for public executions and dissections.

An ancient passage filled with stalls selling used books, once frequented by Vincent Van Gogh.

Driftwood dinosaurs lurk within trees covered in a rainbow array of avian abodes.

A hidden church in a hidden courtyard tells the story of the Miracle of Amsterdam.

This old wooden funicular railway leads to a cemetery in the forest.

A golden egg-shaped sauna in the Arctic tundra.

This bright yellow bridge is a true engineering feat.

This ruined medieval castle was the scene of Lord Robert Dudley’s seductive reception for Queen Elizabeth I.