A wall of chewing gum moonlights as collective art.

Healing Springs that once ran red with soldiers' blood.

An explosion of natural color known as "the river that ran away from paradise."

Venice's island of the dead.

Elevated freight railway turned wildly successful urban park.

A hundred copies of Antony Gormley's naked body stare out across the water.

This whimsical castle of grottoes was the labor of love of a French postman, and one of the greatest achievements of outsider architecture.

The seawater playground of gilded-era San Francisco burned to the ground in 1966.

Monasteries on rock pillars, once accessible only by frayed ropes.

These tracks are believed to be from a panicked dinosaur stampede.

Chewing gum tycoon's memorial lies perched over wife's botanical gardens on Santa Catalina Island.

An unusual bed & breakfast made of papercrete.

Museum dedicated to awful artwork.

The place where Czar Peter I of Russia resided in 1697 during his Grand Embassy.

A walk-in working camera obscura produces 360-degree live images of the San Francisco coast.

The only structure left with direct ties to the Salem witchcraft trials of 1692.

A pharmacy built in the shape of a mortar and pestle, now resembles a fancy cocktail.

A Mysterious Masonic tomb in San Luis Obispo.

Giant acorn-shaped 19th century gazebo from which suburban Washingtonians gazed upon the original "silver" spring.

This communist country can still appreciate its fragrant past.

A classically inspired temple in Redwood City.

The word 'wunderkammer' translates as 'wonder-chamber'. This Wunderkammer is both a museum and a retail store.

Victorian "Fancy Craft" Hair Wreaths and Relics.

Treehouse motel and treehouse-building school.