The only Bahá'í house of worship in North America and one of only a handful worldwide.

The unbelievably opulent home built for an infamous newspaperman.

The now-abandoned tunnels were built for the transcontinental railroad on the route where the first wagon train entered California.

One woman's Viking Castle on Lake Tahoe.

Bits and pieces from the ill-fated Donner Party's winter cabins.

Pillars made of 700 pieces of luggage climb to the ceiling of Sacramento Airport's baggage claim.

Brisbane's manmade urban beach has enough water to fill five Olympic-sized swimming pools.

The stones of this Incan wall complex fit together so well you couldn't fit a piece of paper between some of them.

This Peruvian canyon is filled with geometric salt pools that have been being harvested since the Incan empire.

Preserved Inca city and site of the last Inca stronghold against the Spanish conquistadors.

If you’ve ever seen a picture of Machu Picchu, then you’ve seen a picture of Huayna Picchu—you just didn’t realize it.

The intricate stonework of Machu Picchu serves as a testament to Incan engineers.

A backdoor to Machu Picchu that only the most foolhardy infiltrator would attempt to breach.

The real place where the One Ring to rule them all was forged.

One of the world's steepest streets seems to have houses sliding down it.

One of New Zealand’s few castles boasts beautiful gardens, grand architecture, and a history filled with family drama.

Known for the tunnel that leads visitors to the water.

Celebrating the history of whiskey production during New Zealand's era of prohibition.

Dolphins, ancient clams and hundreds of waterfalls make this one of the world's top tourist destinations.

A Maori village obliterated by an 1886 volcanic eruption.

Major tourist destination known for its bubbling mud-pools and hot thermal springs.

The real life Hobbiton, this sheep farm has been forever transformed since being built for The Hobbit film series.

Tubing through a cave lit with glowworms is a magical underground experience.

The "Rocky Horror Picture Show" character has a hidden camera that broadcasts people doing the "Time Warp."