A 32-acre fun park dedicated to all things cheese.

Just outside of Jordan's capital lies an ancient castle and intriguing caves dating back to the Copper Age.

An ancient capital city that dates back 3,000 years old and harbors many surprises.

Whitewashed mosque contains the world's largest carpet.

A 19th-century fortress and collection of artifacts offer a tour of Saudi history.

The legendary luxury train passage is commemorated with a charming museum inside its former eastern terminus.

At 207 feet, one of the world's longest continuous escalators.

Largest Roman Catholic church in North America.

The sci-fi villain is a little-known inhabitant of the U.S. capital's largest cathedral.

A tiny piece of the Moon is embedded in this stained glass masterpiece.

Home to items never before seen by the public.

Light bulbs, scrap wood, and tinfoil comprise this homemade throne of the gods.

A monument in Washington D.C. marks the spot from which all other roads were supposed to stem.

The first purpose-built art gallery in the United States is once again open as a center of craft arts.

Traditional 11th-century outdoor tannery.

Mosaics, storks, and brothels—this ancient city has it all.

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

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

The stoutest tree in the world.

An elaborate Mayan city shrouded in alien conspiracy revealed the tomb of Pacal the Great.

This staircase full of Mayan hieroglyphics is perhaps the largest single text in the world.

The ruins of an ancient Mayan city, beautifully preserved and only accessible by boat.

Sacred Buddhist home of some spiritual monkeys.

One of the largest Buddhist stupas in the world keeps an eye out in every direction.