The king of U.S. high points towers over every other peak on the continent.

Running under an entire mountain, the longest highway tunnel in North America is kept fresh using portal fans and jet fans.

This small city where almost everyone lives in the same building can only be reached via North America's longest tunnel.

This WWII-era military installation once held an entire city within its walls - now, its walls are falling down.

This Himalayan airport provides one of the most difficult landings in the world.

The largest and, arguably, most scenic fortress in Bhutan.

After the devastating 2011 earthquake, historic Christchurch begins to recover, starting with the pop-up Re:START mall.

The ruins of New Zealand's largest classical-style church.

An unusual and powerful memorial in which earthquake victims are remembered by empty white chairs.

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

New Zealand's only running funicular railway.

A giant doughnut was given to the small New Zealand town of Springfield to promote "The Simpsons Movie."

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

Watch the seas clash at the place where according to Maori tradition, the spirits depart for their journey to the afterlife.

Highly spherical boulders on the shores of New Zealand.

Taumatawhakatangihangakoauauo tamateaturipukakapikimaungahoronuku pokaiwhenuakitanatahu.

The premier place to experience the Victorian imagining of the steam-powered future.

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

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

The most southerly spot on New Zealand's South Island is home to surreally shaped, permanently mangled trees.

A perfect turquoise lake colored with glacier dust.

The Dalai Lama named this New Zealand landscape the "Spiritual Center of the Universe."

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

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