This massive underground salt mine now holds a sci-fi theme park in its depths.

Creating this diorama spurred naturalist Carl Akeley to begin advocating to protect the apes.

Wall Street has a new heroine, a bronze statue of a small but fierce girl.

This whimsical group of statues is a favorite of children who love to climb all over Lewis Carroll's beloved characters.

Try not to get slimed in Tribeca.

Manhattan’s Battery Park has a whimsical carousel full of spinning, glowing fish.

Thirty creepy ghosts now inhabit this decaying 14th-century church.

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

The painted and decorated towers of this Hindu shrine were once the tallest structures in one of the oldest cities in India.

This Gothic-style church is reputedly built atop the remains of one of Jesus's apostles.

The best place in the world to buy tinned fish.

The only university zoological museum in London houses extinct animals, bizarre natural history specimens, and a Micrarium of microscopic creatures.

Those who own or stay at this 500-year-old, allegedly cursed house often meet terrible fates.

Two stone columns flank the grand Venice square, but there were supposed to be three.

Go inside to really appreciate this 500-year-old technological masterpiece.

This triumphal arch celebrating the Sun King's conquest of Lille is a masterpiece of military architecture.

This centuries-old gothic monster has been converted into a sprawling, glossy bookstore.

Amsterdam's former hotspot for public executions and dissections.

The somber sculptures commemorating Irish Famine on the river Liffey in Dublin.

The gorgeous library at Trinity College is home to remarkable treasures of Irish identity.

These 18th-century paintings of Warsaw were used to reconstruct the city after World War II.

The Polish capital has had a deep connection to its guardian mermaid for almost a millennium now.

This giant urban staircase was built to keep the city's brave fighting men from getting waylaid in the red light district.

The opulent home that inspired Tintin's Marlinspike Hall and the adventures within.