This strange seaside tower got its name from a wealthy eccentric who would hide coins among its stones.

A favorite haunt of dinosaur loving children and hallucinogen loving hippies alike.

A pair of slides and a tree-lined stair corridor have been an urban oasis for nearly 40 years.

A strange house built only at night, with rumored mystic inspiration.

Olfactory delights in San Francisco's Botanical Gardens.

Relics of the 1894 Midwinter Exposition continue to delight visitors today.

Carnivorous plants, medieval aphrodisiacs, and the largest original wood structure glass conservatory in the western hemisphere.

A hand-built folk art installation covered with messages of God's love.

There is no trying to fall in love with this Star Wars fountain, you just do or do not.

The ghostly remains of an accidental sea.

Get lost in this haunting fairytale art walk through a man-made eucalyptus grove.

The only theatre in the world constructed specifically for sound movement.

A tiny theater hidden in an alley plays a constant stream of short silent films for anyone willing to peer through the peephole.

A trash dump made beautiful by nature's power.

A winding path built in secret on the edge of the continent.

A one-of-a-kind collection of a unique medium.

Under the right circumstances, this waterfall in Yosemite briefly turns a luminescent fiery orange.

A 140-year-old castle with underground caves hidden in San Francisco.

An enormous, inside-out glass globe built in 1935.

The world's only museum devoted to the wonders of fluorescence.

These old stone ruins in the Oregon wilderness were once bathrooms and are steeped in legends of murder.

These fantastically named natural pools look like something out of a Scottish myth.

Dodge prohibitionists and slide through the telephone booth in Crif Dogs.

An emerald-green grotto just a short trip from Austin.