A massive, heart-shaped, wind-carved crater in the middle of the Israeli desert.

Deep in the Negev Desert, the world's tallest solar tower looks like a sight straight out of science fiction.

The most visited, and possibly most controversial, museum in Germany.

These tombs were built into the side of a mountain so that ancient angels could reach the dead.

The Peruvian Andes are a center of hummingbird diversity, and this garden offers an opportunity to see more than 30 species of hummingbirds.

This open-air museum was originally a World War II testing ground for German missiles and rockets.

These massive moving sand dunes have swallowed an entire village and are still on the run.

This 700-year-old structure is one of the most unique architectural and historic monuments in Gdańsk.

A half-buried vehicle in Prague's is the latest iteration in a long-running piece by Czech artist David Černý.

Stroll past dozens of intricately-detailed scale replicas of buildings from all over Czechia.

A monument to the small town of master violin makers and its countless luthiers.

Tucked away in a Prague park, a statue beloved by romantics honors a poet so nice they buried him twice.

Monument to a suicide protesting the Soviet invasion.

A bus with a butt and biceps to put Olympic athletes to shame.

The deepest sinkhole in Central Europe comes with a grisly tale and an unusual nickname: “The Stepmother Abyss.”

Enormous sandstone towers loom within a Czech forest.

This artificial cave looks like something out of a fairytale.

This tipsy office building in downtown Prague was originally called “Fred and Ginger.”

Walk through Czech history in Prague's largest graveyard.

The forgotten tomb of the Peruvian rubber baron who was the inspiration for Werner Herzog's epic film "Fitzcarraldo."

Haunted by its violent past, this colonial bastion was the largest Spanish military installation in the Americas.

This space-age looking obelisk rises over a city in the rainforest, meant to resemble the local castaña tree.

This 16th-century monastery was founded to cloister the daughters of wealthy local families.

Built on the remains of one the Incas’ most important gathering spots, this square keeps the spirit of a fallen empire alive.