This semi-secret garden in south Seattle emulates a traditional Japanese garden using the plants of the Pacific Northwest.

The colorful array of art leads to a small Aztec pyramid.

This incredible college library is a visual masterpiece of mosaic art. It also looks kind of like a giant boombox.

These biodiverse university gardens form a green oasis amid the urban chaos of Mexico City.

A disquieting Aztec sculpture displays hundreds of stone skulls representing the victims of human sacrifice.

Explore the atmospheric ruins of an abandoned convent in the dense forests of Mexico's first national park.

These haunting ruins of a 700-year-old Prehispanic city have witnessed centuries of wars and massacres.

A 16th-century monastery boasts a lush array of plants native to Mexico’s most biodiverse region.

Amsterdam's Red Light District leaves little to the imagination.

An overgrown and largely forgotten cemetery lies hidden within the outskirts of Amsterdam.

A Portuguese Jewish cemetery filled with stunning grave monuments that date back to 1614.

Established in 1638 to battle the Black Death, Hortus Botanicus Amsterdam is a treasure trove of rare flora.

Architectureal fantasy quarter of Rome.

This volcanic cave lake is essentially hard proof that Iceland is the most magical place on Earth.

One of the most remarkable caves in all of Iceland was created by a once raging river of lava.

A popular Icelandic children's story comes to life inside this cave.

This abandoned, partly demolished building is now home to beautiful graffiti and murals.

Inside this museum, visitors venture through ghost stories entrenched in Icelandic folklore.

A fantastic reconstruction of a 10th-century Viking longhouse.

This tiny cabin was home to one of Iceland's most famous painters and was the only land he ever owned.

This verdant, tree-lined Reykjavik graveyard is both enchanting and eerie.

This oceanside Reykjavik spot is speckled with recycled sculptures and large stones.

One woman's lifelong collection is on display in this unassuming house on an Icelandic fjord.

Inside this Icelandic greenhouse, geothermal energy keeps tomatoes warm and growing.