A small pack of an ancient, hairless breed of dog once believed to guide souls through the underworld lives on its grounds.

The Mexican painter Diego Rivera created this unusual museum to display his collection of pre-Hispanic artifacts.

The only castle in North America to ever house European sovereigns.

The famous artist couple lived and worked here, in two different houses connected by a bridge.

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

Sniff the Titan Arum's rotting flesh.

A crumbling hospital from the 1850s on Roosevelt Island.

This 1,300 year old monastery built atop a single rock was once only accessible depending on the whims of the tide.

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

A museum in the former home of Marxist revolutionary Leon Trotsky.

Part bookstore, part café, and part forest.

Diego Rivera's massive tiled fountain and failed infrastructure project.

One man's swirling six-acre monument of stone.

A stunning, two-tiered waterfall made famous by poets, artists and the legend of a ghost dog.

This abandoned radar station from the Cold War era now only broadcasts a seriously ominous air of isolation.

The unique waterfall in Iceland's south features a backdrop of geometric black lava columns.

This elegant arc of a waterfall marks a religious turning point.

Iceland's largest lagoon is home to stunning multi-colored icebergs.

The oldest (maybe) swimming pool in Iceland is a stunning oasis built into the side of a lush hill.

One of the tallest buildings in Iceland, and perhaps, the most visually impressive.

This eye-popping Icelandic crater lake is surrounded by red volcanic rock.

The picturesque birthplace of Icelandic democracy is drenched in the blood of its brutal past.

Rising from the sea like a stone monster.

Church in Manhattan holds the bloody sock of Padre Pio, among with many other unusual relics.