Located in the thermoelectric factory that once powered the entire city, this Portuguese museum is shockingly fascinating.

Portugal's National Pantheon has a history of curses, collapses and financial problems.

An exquisite collection of fairytale conveyances that puts most car museums to shame.

This Industrial Age architectural and engineering gem helps visitors and residents alike traverse Lisbon, “The City of Seven Hills.”

A king's pet, a pope's gift, an artist's inspiration, and a tragic shipwreck.

The world's oldest bookshop still in operation.

This ancient tunnel is one of the most important examples of Roman hydraulic engineering in Spain.

Spanish architects used seized Muslim gravestones to rebuild parts of the fortress.

Three bridges and one giant canyon make up this fantastic Spanish settlement.

This awesome Spanish castle is so fantastical it was actually used on Game of Thrones.

The small Spanish town that played an important role in a human's first steps on the moon.

Off of the Crawfordville Highway in Florida, nature is taking back this decrepit row of Ford trucks.

Over 120,000 curious objects that have shaped our modern world.

Noirish green neon marks the location of one of the oldest private detective agencies in France.

Far from the shore, this sandy victim of the Skeleton Coast looks like it was plopped in the middle of the desert.

Inside this striking glass building, visitors can see thousands of dinosaur fossils in the positions that nature deposited them more than 150 million years ago.

This Victorian footbridge over the River Tees was originally built to carry water from the high moorland to the industrial towns on the coast.

A former plant in one of the hubs of U.S. steelmaking has been turned into this museum celebrating the history of American industry.

Home to an eclectic collection of over 200 vintage motorcycles, Americana, and some of the most extraordinary antiques from all around the world.

At this beautifully preserved Pre-Hispanic site, you can see ancient petroglyphs with depictions of llamas and alpacas.

The collection includes seven one-of-a-kind automobiles, vintage fashion, and more.

This medieval "painted village" is famous for its geometric facades.

This is the oldest Roman-made bridge in the city still existing in its original state.

The "3rd largest" city in California is an empty mirage of suburbia in the middle of nowhere.