The last remaining relic of San Francisco's glittering 1915 Panama Pacific Exposition.

This massive redwood tree has a hole in the base big enough to drive through.

Quite simply the largest tree in the world (by volume).

This reclusive Hopi village in Arizona has been continuously populated longer than anywhere else in America.

This immigrant bridge once spanned the Thames but is now a fixture of an Arizona city.

A wild west cemetery in Tombstone, Arizona, provides a window into the Old West.

A tiny wilderness cemetery commemorates the deadliest episode of the Klondike Gold Rush.

A classic gold rush hotel can be expected to pick up some ghosts along the way, and the Golden North is no exception.

Former abode of notable poet, complete with literary references and stories of ghosts.

This elaborate towering structure was once famed for its revolutionary height.

Memorializing an American tragedy of massive proportions.

A dramatic, 360-degree recreation of Pickett's Charge in the Civil War.

This palatial botanical garden is home to one of the largest pipe organs ever installed in a private residence, and a piece of Wood's cycad.

An indoor miniature village and labor of love for Laurence Geiringer, a model railroad enthusiast.

Sail through this subterranean show cave that is home to a legend that would go on to name nearly everything around it.

Frank Lloyd Wright's most iconic home dangles over a Pennsylvania waterfall.

The highest point in New Jersey is marked by a massive, if simply named, obelisk.

Infamous marsh filled with toxic waste, World War II-era London rubble, and dead mobsters galore.

Local lore claims this park is named after a young woman who jumped off a cliff.

This small-town pizzeria won the Hollywood lottery.

Yale University's home for rare works, including the mysterious Voynich Manuscript.

Tacoma’s 25-foot coffee pot music spot has served up over 80 years of concrete kitsch.

Nuclear reactor created the plutonium used on Nagasaki.

Shoreline strewn with the remains of ghostly fallen trees.