The ruins of a town wiped out by the second-largest earthquake in recorded history.

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

One woman's dream became a train hotel in her backyard.

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

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

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

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

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

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

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

A high school astronomy enthusiast designed this model of our solar system to be traversed on foot.

Along this stretch of Indiana roadway resides a giant insect composed entirely of scrap metal.

Low-frequency noise compared to an idling train can only be heard by some of this industrial town's residents.

An opulent testament to the boom-and-bust history of industry in north central Indiana.

A rural hall of justice holds the world's only comic book and superhero museum.