The oldest hall in Iceland was written of in the Sagas and features a centuries-old escape tunnel.

Three columns of volcanic rock shoot out of the ocean.

Gilded heaven for philatelists and architecture freaks, still in full working order despite sitting atop tremulous ground.

Worm salt and other local ingredients are on the menu at this cult favorite ice cream shop.

This once-abandoned mansion is now a dreamy event space.

This warehouse-gallery-shop hybrid showcases Mexican craftwork at its best.

Beneath the most controversial monument in Mexico City is a cultural center that exhibits only digital art.

You can release a young butterfly at this beautiful indoor garden.

A series of abstract sculptures pop up from an otherworldly volcanic landscape.

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

Psychedelic murals coat the inside of a nondescript research library.

Get a privileged view over Mexico City's Historic Center from a terrace right in its heart.

This one-window stand has been home to a giant vat of slowly simmering meats and an array of unique tacos for almost 50 years.

An airy Art Deco space devoted to the weird and wonderful folk art traditions of Mexico.

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

Mexico City's largest market contains a Willy Wonka-esque wonderland.

A quirky and charming restaurant founded by artists.

66,000 pieces of art, donated by one of the world's richest men.

A jaw-dropping "megalibrary" that turns book-browsing into a geometric adventure.

Frida Kahlo's childhood home, now a museum of her life and works.

Part bookstore, part café, and part forest.

A book collector's dream, this Toronto bookstore has the world's first "Biblio-Mat," a random book vending machine.

This "City of Books" holds a museum, library, and the complete personal book collections of five of Mexico's greatest thinkers.

Superstitious? Discover the witchy side of Mexico through its largest esoteric market.