A desert that rolls right up to the ocean, where it's so dry animals live off the fog.

This "dead marsh" sits among the largest sand dunes in the world, a forest frozen in time.

Thousands of coffin-like pillars make up this controversial Holocaust memorial.

Dedicated to the European Sinti and Roma peoples murdered during the Holocaust.

Macabre astrological automaton clock dating to the late 1400s.

The two abandoned overpasses are among the largest bridges in Poland.

This Nazi ruin was the site where Hitler was almost blown up by a suitcase bomb.

A peculiar family mausoleum built by a German nobleman captivated by the occult.

St. Mary's features one of the most spectacularly decorated cathedral interiors in all of Europe.

Inside this Krakow church, an explosion of psychedelic color.

The youngest volcano in Central America.

A symbolic graveyard for the villages that perished during the Nazi invasion of Belarus.

Rent a barrel for a personal view of where the Baltic Sea meets the Gulf of Riga.

Surreal works of unreal stone and metal dot the landscape of this Latvian art park.

This seaside pine grove features an exclusive watchtower that presents amazing views.

This statue is dedicated to the animal cosmonauts that perished during space flight experiments.

Beneath Kraków Old Town's main square lies a hologram-filled medieval market vampire graveyard wonderland.

A small granite monument marks where the borders of three countries meet.

A series of playful yellow penguins share a serious message about the environment.

This walkway is so narrow it needs its own light to stop pedestrian traffic jams.

A church of bones, decorated with 40,000 human skeletons.

A Jenga-style cylindrical tower of books that appears to go on forever.

Abandoned for decades, trains still pass through the now-restored remains of one of Madrid's first metro stations.

Construction of Barcelona's iconic (but controversial) church is expected to be completed in 2026—a century after the death of its architect.