Permanent exhibit reminds visitors of the Exxon Valdez.

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

Running under an entire mountain, the longest highway tunnel in North America is kept fresh using portal fans and jet fans.

An Alaska livestock farm devotes itself to harvesting wool from creatures that once ran with mammoths and sabertooth tigers.

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