One of Alaska's most significant ancient sites, spanning millennia and cultures, is right under the feet of some famously fat bears.

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

Massive mounds of golden sand look like a desert landscape randomly plopped in an Arctic forest.

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

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

The beginning of the historic Iditarod Trail connecting the Alaskan cities of Seward and Nome.

The simple log cabin of a famed loner and naturalist stands preserved as a symbol of the ultimate DIY lifestyle.

In 1912, this idyllic Alaska landscape was blown apart in the largest volcanic eruption of the 20th century.

The facade of this relic from the Klondike gold rush is decorated with over 8,800 pieces of driftwood.

A classic gold rush hotel can be expected to pick up some ghosts along the way, and the Golden North is no exception.

Originally a brothel during the Klondike Gold Rush, this bar once used dolls to denote when ladies were working.

A historic freight system that found the true gold rush is in tourism.

This "Alaska-style" billboard is over 100 years old.

A monument commemorating the role of Alaska's native Tlingit guides in the Klondike Gold Rush.

The first Russian Orthodox church in North America and an Alaskan landmark.

The ghostly remains of what was once the world's richest copper mine.

The "Gateway to the Arctic" connects Barrow's indigenous population with the sea and its traditional industry: whaling.

Commemorating the lives of a renowned humorist and a famed aviator who died in a plane crash in northern Alaska.

A beach made of semi-precious green sand on the Big Island of Hawaiʻi.

The southernmost point in the United States is a beautiful place to look at but a deadly place to wade in.

These ancient sacred grounds granted amnesty to those who managed to reach them.

One of Hawaiʻi’s largest petroglyph fields contains a number of depictions of people.

Earth's tallest volcano is sacred to Native Hawaiians, and home to a dozen world-class observatories.

More than 2,000 species of tropical plants call this nature preserve and sanctuary home.