Submerged lava formations create incredible waterworks.

This narrow coastline trail through the dense Kauai wilderness is among the most beautiful and dangerous in the world.

This Hawaiian cattle ranch acts as a museum devoted to the island cowboys that predate the wild west.

A controversial memorial at the place where Captain Cook met his violent end.

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

A priest with no formal artistic training used basic house paint to create gorgeous religious scenes inside this historic church.

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

This black shoreline is made up of exploded lava particles.

A quirky roadside sign was the subject of a years-long legal standoff over highway right-of-way clearances. 

This abandoned mine offers a glimpse at what life was like for those who came to Alaska seeking Gold Rush riches.

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.

This gravelly, dangerous highway is the only road in the United States that leads to the Arctic Ocean.

The stickered marker pinpoints where the only maintained road in the United States crosses into the polar region.

North America's first frozen mummified remains of an ice age steppe bison, the 36,000 year-old mummy named "Blue Babe."

The sculpture's largest spire points directly toward the North Star.

This mile marker stands at the unofficial end of a highway built to defend the United States from a Japanese invasion during World War II.

Once the center of Gold Rush mania, now the starting point for the Yukon Quest sled dog race.

This super-sized statue is the only public memorial to the deal that ended America's neutrality during World War II.

A morbid gateway to an Alaska town prides itself on the hunting history it represents.

An acoustic anomaly with a mysterious cause sits in the heart of Tulsa.

A Route 66 filling station that was designed to resemble the Hagia Sophia, and is now the symbol of an arts district.

In Tulsa's Oil Capital historic district, even the bus station is "fauxback" Art Deco.

This massive Art Deco-inspired mural was the world's largest augmented reality artwork at the time of its completion.