The highest dunes in California are the most likely place in the area to hear the Singing Sands.

The lowest point in North America is home to an undrinkable pool surrounded by fields of geometric salt flats.

Once thought to be the oldest living tree in the world, Methuselah was germinated before the Egyptian pyramids were built.

This Big Sur waterfall drops 80 feet directly into the Pacific Ocean, and inspired the hillside house up top.

Quite simply the largest tree in the world (by volume).

One of the most scenic stretches of road in America winds between some of the country's oldest trees.

Each year these high desert hills are absolutely covered with poppy flowers in a surreal show of nature.

Towering basalt columns, a creation of fire and ice.

An island graveyard with spectacular views of the Caribbean.

Underwater art project will double as a massive artificial coral reef to help regenerate the damaged ecosystem.

Where visitors can play more than 150 retro arcade games.

A collection of modern and vintage pinball machines housed in the cellar of a 15th-century building.

The final resting place of more than 200,000 people, this is one of the largest cemeteries in Europe.

A menacing statue of this mythical creature can be seen at the legendary site of the monster's lair.

This man-made mound monument was built out of soil from all across the Polish empire.

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

This Polish cave has housed a dragon, a brothel, and an enduring legend.

An underground city of salt.

This street has over a half-dozen names, all at once.

A collection of miniature, symbolic sculptures hides in plain sight across Kyiv.

Marvel at the excessive luxury of the ousted Ukrainian president's former estate.

This unique Lady Liberty is one of the only examples of the figure sitting down.

This exquisite, alienesque piece of Soviet architecture is being threatened by modern shopping malls.

Kyiv's answer to Muscle Beach is a Soviet-era gym made from scrap metal.