As one of the world's largest hydroelectric dams this plant took two countries to get built.

An underexplored, 130-foot tropical waterfall that you will have all to yourself.

A series of waterfalls so massive they straddle the border of Argentina and Brazil.

Even drowned in an ocean of toxic waste, the remnants of this Romanian village stand tall.

The home of a deceased Hungarian artist is now on display for visitors.

Small museum dedicated to one of the founding fathers of modern astronautics.

The "feral child" who appeared in Bavaria in the 19th century remains as much a mystery as his unsolved murder.

This 19th century cyclorama acts like an analogue time machine to a different era.

This enormous sardine in the Segura River pays tribute to an annual post-Lent tradition.

A museum dedicated to the centuries-old cave dwellings that housed marginalized communities on the outskirts of the former capital of Muslim Spain.

Eat the ultimate iteration of Portugal's most beloved pastry.

This ship carrying cargo and four church bells for the Catedral Metropolitana Nossa Senhora Aparecida ran aground in 1968.

The old ceramics factory on Boa Vista shows the power drifting sand has to destroy buildings.

Rolling sand dunes of the Sahara... in the middle of the Atlantic Ocean.

Once a bustling fishing village and trading post, today these Cape Verde ruins provide a home only for seabirds and turtles.

When you're a great Russian Tsar, even your vomit gets a statue.

Clap your hands at the base of the pyramid, and the song of a sacred Mayan bird will echo through the air.

If you can look past the nearby sewer pipes, this urban sinkhole grotto is a mini-paradise.

This giant wire frame man sculpture is crouched in contemplation.

Rich with fauna and flora, nature-lovers can walk across the sea at this UNESCO World Heritage spot.

This enormous storm barrier is one of the largest moving structures on Earth, with each arm taller than the Washington Monument.

Explore a traditional Albanian dwelling that pays tribute to the region's rich history.

The elliptical citadel resisted the advance of the mighty Ottomans several times, thanks to the military prowess of the "Dragon of Albania."

A temple dedicated to the 13th-century Alevi Turkish dervish credited with bringing Islam to the Balkans.