The ruins of this Alaska gold mine form a gorgeous ghost town.

A rare chance to get up close and personal with a 13-mile ribbon of ice near downtown Juneau.

A trading post in the North Pole where children send letters.

Four-story concrete hotel never opened to customers.

This frozen tunnel in central Alaska is both an engineering feat and a valuable climate classroom.

Gorgeous cave resemble a winter wonderland.

Upside-down trees serve as natural flower pots in this hanging garden of Alaska.

Breathtakingly blue walls shimmer inside the "Glacier Behind the Town."

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

Mind-blowing carvings and fantasy ice scenes grace the largest year-round ice environment in the world.

This 12-foot-tall T-rex is the largest K’Nex skeleton sculpture in the world.

In Rickwood Caverns, visitors can travel hundreds of feet underground and see beautiful formations unique to the region.

This fountain was commissioned by a mother grieving over her son's passing.

One of almost 200 confirmed impact craters in the entire world, untouched for tens of millions of years.

This 880-acre facility is home to a massive collection of vintage motorcycles and cars, as well as a 2.38-mile race course.

Since it formed millions of years ago, this cave system has been a sacred burial ground, a Prohibition-era speakeasy, and the center of an amusement park.

Auburn's iconic eagle flight goes back to a 19th century eagle that dropped dead on the field after inspiring the football team to victory.

Once a bustling cotton factory, this early 20th-century building is now home to a thriving artspace.

Abstract marble carving for an 8.5-pound rock.

A natural history museum with an extensive collection of bird dioramas.

Medical museum featuring a number of excellent medical models.

Dothan, Alabama has been invaded by scores of anthropomorphic peanuts.

This botanical garden has been nicknamed "Alabama's Little Corner of Greece."

Colloquially known as "the lynching memorial," this is the United States' first memorial to the victims of racial terror at home.