A Mars simulation in the southern Utah desert.

This plaque marks the site where the penultimate chapter in the journey of two doomed boys unfolded in an imagined parallel universe.

A collection of memorabilia from the Beat era in the back of a San Francisco bookstore.

Golden Gate Park's historic collection of plants.

San Franciscans leave gifts and messages for the magical beings that live behind the tiny, mysterious door installed on a tree in Golden Gate Park.

The alley connecting two of country music’s most historic venues has a rich history of its own.

Victorian-era Egyptomania left its mark on this Nashville landmark.

It may take some time to locate, but it's sure to warm even a heart of stone.

Home to a giant switchblade and one of the world's largest collections of pocket knives, this museum is a cut above the rest.

Meet manatees face-to-face at this zoo for native species.

Where monkeys run wild and the humans are caged.

A luxurious 1880s hotel with its fair share of Tiffany stained glass, Edison electricity, and of course, ghosts.