The best place in the world to buy tinned fish.

Legacy of the earthquake that nearly wiped Lisbon off the face of the Earth.

Every equinox this Maya pyramid puts on a spooky ancient light show.

Ring the bell to enter a bar that looks equal parts museum and old curiosity shop.

The world's oldest bookshop still in operation.

Diego Rivera hid various people and symbols in his first large-scale mural project.

This museum houses two of Mexico's most impressive Aztec monoliths.

A disquieting Aztec sculpture displays hundreds of stone skulls representing the victims of human sacrifice.

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

66,000 pieces of art, donated by one of the world's richest men.

Part bookstore, part café, and part forest.

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

At the United Kingdom's only residential library you can sleep among the books.

This orchid sanctuary protects countless varieties of the flower, from the huge to the microscopic.

In Egypt's expanding metro area, many of the neighbors are dead.

This old Estonian mine has been kept like a sprawling time capsule of the local shale industry.

If you’ve ever seen a picture of Machu Picchu, then you’ve seen a picture of Huayna Picchu—you just didn’t realize it.

Double spiral staircases are not unheard of, but they are very rare.

At Monet's beloved home you can still see the Japanese bridge, waterlilies, and weeping willows that were the subjects of some of his most iconic paintings.

This stunning natural double arch, the largest in the Alps, went undiscovered until 2005.

Rent out a glass igloo to watch the Northern Lights like you live in the future.

Hundreds of antique bank vault locks on display in New York City.

A treasure trove of artifacts, books, and artwork from the "golden age" of exploration.

This beautiful building in the heart of Manhattan's Financial District was empty for decades.