A roaring, awe-inspiring double cascade of icy water flows through woodland Oregon like something out of a Tolkien novel.

Former hunting lodge of a duke who was an avid collector of impressionist works.

The water-powered carriages are long gone, but for over a century this funicular railway has been the fastest route to the highest point in Paris.

This 1,300 year old monastery built atop a single rock was once only accessible depending on the whims of the tide.

"Girl in a Wetsuit" is what happens when a sculptor has to find a way around a 100 year old copyright.

The conquistador's former fortress is the oldest preserved colonial building in the Americas.

These sacred Mesoamerican ruins feature peculiar petroglyphs hidden in the stones.

Iconic red and white plaques show the creative names invented to navigate the city streets.

The ruins of an ancient city built by Mayan traders is centered around a temple of a sacred feathered serpent deity.

A Lovecraftian altar of nightmarish bronze chairs sits ominously on a boardwalk in Puerto Vallarta.

Mexico's astounding mummy museum with "the world's smallest mummy."

No telescopes, no power, no gift shop: The Observatory of Chichen Itza, one of the world's oldest observatories, takes astronomy back to basics.

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

Bangkok celebrated its shifting monarchy with a militaristic homage to democracy.

A building facade covered with the statues of 11 giants of Tajik literature.

The world's second-tallest flagpole stands proud despite dropping rank.

An entertainment center in a huge transparent tent.

A modern tower, symbolizing the legend of a golden egg on top of the tree of life.

Iconic pyramid from famed British architect Norman Foster designed to represent all of the world's religious faiths.

This incredible college library is a visual masterpiece of mosaic art. It also looks kind of like a giant boombox.

A museum in the former home of Marxist revolutionary Leon Trotsky.

The only castle in North America to ever house European sovereigns.

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.