Home to some of the world’s darkest skies, this project blends ancient Māori culture with world-class astro tourism.

Buried beneath an unassuming Gotland farm was the largest collection of Viking silver, mostly of Islamic origin.

These magnificent city walls rise from the barren sun-baked Spanish plains like something straight out of a fairytale.

A monk spent 14 years carving steps through tuff to make this religious site more accessible to pilgrims.

These marks in Myddelton Passage aren't your run-of-the-mill vandalism, and they weren't made by your typical vandal.

The United Arab Emirates's biggest and oldest fort pays homage to a lost era.

This house covered in art created with volcanic rocks is shrouded in macabre lore.

This Kathmandu museum, built in an Austrian modernist style, looks like a set from Star Wars.

Narrow passes cut out of mountains surround the medieval capital of Japan.

In a busy Oaxaca market, a nearly century-old drinks stand still serves family recipes from giant clay pots.

The final resting place of the "father of special effects."

This hulking behemoth is actually five interconnected towers built in the 1960s.

In a 345-million-year-old cave that's 200 feet underground, dinner awaits.

Folklore says this medieval fortress was plopped atop a portal to hell to trap the demons below.

The subterranean "lake" below the Paris opera house inspired the Phantom of the Opera's lair.

Twelve hundred stone carvings guard this off-the-beaten-path Buddhist temple.

This extraordinary geological oddity resembles human-made pavement.

The striking and little-touristed ruins of an ancient city destroyed and rebuilt by the Aztecs.

One man's homage to the sun continues to grow like a glass fractal.

Legends of treasure and spirits flow from this this fairy tale-like oasis.

The ridged layers that make up this river canyon represent Earth's geological history.

An ancient instrument used to measure the waters of the Nile so Egyptian farmers would know whether to expect famine or flood.

An abandoned railroad tunnel is now filled with bioluminescent bugs.

One of the highest Roman forts in Britain is set amid dramatic scenery on a notoriously difficult road.