Clean, cold drinking water flows from a nondescript pipe in a roadside rock face.

Considered by many to be one of the most dangerous highways in Alaska.

A suburban street in Anchorage doubles as a runway, and each home has its own airplane hangar.

During the summer, surfers in Alaska take advantage of this inlet’s unusual water patterns.

This whimsical stacked cabin looks like something out of a children's book.

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

The old observatory in Copenhagen has a spiral corridor used as a racetrack.

The de facto symbol of Copenhagen is this bronze fairytale which cannot seem to keep its head for very long.

Opulence and fantasy collide in this royal chair which is supposedly made with unicorn horns.

Danish tourist destination well known for open stalls where vendors sell marijuana on the street.

This sublime architectural marvel is a rare example of an expressionist church.

Copenhagen's celebrated theme park and gardens.

Montreal's giant farmer's market is a foodie's best friend, especially in the winter months.

This neon blue river gets its color from a unique mix of bacteria and volcano minerals.

Balanced rock sculptures pay tribute to a murdered conservationist and his pioneer wife.

If you can look past the nearby sewer pipes, this urban sinkhole grotto is a mini-paradise.

This one-of-a-kind convent boasts a kaleidoscopic exterior of stars and double-headed eagles.

The ruins of an important pilgrimage destination for worshippers of a Maya fertility goddess.

No telescopes, no power, no gift shop: The Observatory of Chichen Itza, one of the world's oldest observatories, takes astronomy back to basics.

Clap your hands at the base of the pyramid, and the song of a sacred Mayan bird will echo through the air.

Every equinox this Maya pyramid puts on a spooky ancient light show.

This deconsecrated church has seen many uses, from a tobacco storehouse to a cinema.

A new sculpture calls attention to climate change in the centuries-old city it threatens.

This sturdy, circular stronghold served as one of the forts that protected the Venetian Lagoon.