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

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

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

This ghostly Alaska village still clings to a steep cliffside despite having been abandoned for over 50 years.

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

The ruins of this Alaska gold mine form a gorgeous ghost town.

Colorful boxes placed over the dead are left to rot and crumble.

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

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

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

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

La Monte Young and Marian Zazeela's "Dream House" will immerse you in an ever changing world of sound and light.

An artsy hidden staircase leads to breathtaking views of San Francisco.

A beautiful and abandoned New York subway station from 1904, complete with chandelier.

A terrific purveyor of natural history objects and curios.