The world's brightest bioluminescent bay.

The Avenue of Mausolea is a series of grand palatial tombs.

This innocuous New Mexico storefront was once the secret jump-off spot for Manhattan Project scientists.

This sandstone mansion was the home of two of Oregon's most important pioneers.

These old stone ruins in the Oregon wilderness were once bathrooms and are steeped in legends of murder.

The seamy, underground secrets of Portland's criminal past.

Hidden high on a remote mountain peak is a humbling and mysterious Vietnam War memorial.

The burial grounds of a secret society includes fences topped with fake Tesla balls.

Dictionary Johnson’s favorite feline.

Iceland: home to volcanoes, waterfalls and, apparently, Santa?

If a glacial river suddenly diving into a sheer chasm via a dramatic, multi-stage waterfall isn't peak Iceland, it's certainly close.

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

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

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

The unique traffic pattern named for an influential urban planner is also known as the Pedestrian Scramble.

Unicorns, elephants, and bears, oh my!

The design of this beautifully crafted building was inspired by Norwegian glaciers.

Looming communist pillar with a Czech twist.

A turn of the century building boasting some of the most beautiful art nouveau architecture in Prague.

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

Countless grotesque faces stare out from this eerie Prague art wall.

With over 100 jam-packed rooms to explore plus elaborate tea services and events, the Mansion on O Street is a hidden treasure.

Home to three historic ships from the age of Vikings.

One man's exploration of the human form, including the bizarre and delightful "Man Attacked by Babies."