The famous artist couple lived and worked here, in two different houses separated by a bridge.

Frida Kahlo's childhood home, now a museum of her life and works.

An island filled with hundreds of hanging, decomposing, decapitated dolls.

Central America's deepest lake is actually a volcanic caldera, surrounded by three volcanoes.

The soaring gondola lines form the longest aerial cable car system in the world.

A celebration of Colombia’s premier contemporary artist.

This Bogotá museum houses the world's largest collection of pre-Columbian gold relics.

This ornate Victorian marketplace was the setting for Diagon Alley and the Leaky Cauldron in the Harry Potter films.

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

Amid the bustle and noise of the Financial District hides a secluded garden oasis above the city streets.

An "inside out" building in the historical center of Paris, featuring Europe’s largest modern art museum.

The ruins of Scottish sea salt production.

This tiny little cave was said to have been a refuge for a saint with a glowing arm.

Charles Dickens was not a fan of the ghastly wall dressings in this 6th century church.

A new sculpture calls attention to climate change in the centuries-old city it threatens.

It's believed that these columns marked the end of the Via Appia.

Three underground crypts and a pointed arch under the bell tower make this cathedral unique among Romanesque churches.

A large statue of Pope Gregory XIII in Bologna was disguised as Saint Petronius to avoid destruction.

Nobles would stage mock naval battles on this large lake at the Royal Palace of Caserta.

The only visible remains of this ancient Greek underground temple is its roof protruding from the earth.

This Roman theater was crafted into the local tuff rock and was rediscovered during the 19th-century.

This massive rock balanced for thousands of years being tossed here during a volcanic eruption.

A striking memorial recalls thousands of Bolognese men and women killed fighting fascists in World War II.

This building features dozens of faces along its facade, although one is a bit chilling.