An astounding 13th-century architectural and historical achievement

The Hveragerði fissure runs through this unassuming shopping center.

A river runs through this remote valley in a very unexpected way.

This spectacular track has run continuously since 1882.

The walls of America's oldest masonry fort famously "swallowed" cannonballs.

Just a man taking his prehistoric pet for a stroll.

Modeled after a famous church in Vienna, Austria—but in Helena, Montana.

The old fire tower is one of the last of its kind in the United States.

Sacred Indian temple that’s all monkey business.

Known as the leaning temple, the sacred structure has somehow developed a severe nine-degree slant.

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

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 valley of hot springs and boiling mud pots is home to the record-holding "Geysir," which originated the English word.

The California capital city once stood 10 feet lower than it does today.

Unsurprisingly, Holland is home to one of the most magnificent flower gardens in the world.

The Bloemen Route, or “Flower Route”, stretches 25 miles through prime Dutch tulip country as a result of “tulip mania,” the world’s first economic bubble.

This Old West eatery along America's Loneliest Road was originally a stop on the Pony Express.

A 'living museum' in Leiden, the oldest of its kind in the Netherlands.

Modest by day, illuminated majestically at sunset.

Siddhartha Gautama sat here and received enlightenment.

A small but immensely extravagant palace built by the "Night King."

The fairy tale castle of the "fairy-tale king."

A beautiful geyser under environmental threat.

One of nature's most well-scheduled phenomenons resides in Wyoming's Yellowstone National Park.