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

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

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

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

Four-story concrete hotel never opened to customers.

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

This WWII-era military installation once held an entire city within its walls - now, its walls are falling down.

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

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

The oldest place in Hartford is a cemetery with thousands of bodies stacked beneath the grass.

This stunning Connecticut mansion is actually just a one-room-deep hoax.

The former home of Samuel Clemens and family remembers the happiest period of the author's life.

A wunderkammer hidden on the top floor of the Hartford statehouse.

A massive Montreal stadium that has seen nothing but trouble since its inception.

Two thirds of this Montreal neon icon has survived to flash another day.

The biggest museum dedicated to insects in North America, one of the largest in the world.

The skyline of Montreal includes the silhouette of an unexpected fruit-shaped Canadian staple.

A Montreal deli that was so beloved that it was allowed to circumvent their laws of language.