San Francisco’s condensed garden of incredible plant growth.

A second generation sun-powered marvel lights up the night.

Thousands of migrating monarchs overwinter clustered amongst the eucalyptus trees.

This unconventional used book store was once in the news for the surprising act of burning books.

A 250 million-year-old rock formation has earned a rather unique nickname.

Explore the wide world of desert plants at this unique Palm Springs botanical garden.

An imperial church bombed to ruins during WWII now stands as a jagged memorial.

This bridge was the birthplace of a unit of measurement based on a fraternity joke.

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

This remote island, home to the easternmost point in Denmark, once hosted pirates and a military fortress.

Barely visible foundations remain where Stow Lake’s “observatory” once welcomed visitors.

Adolph Sutro's little-known, geographically inaccurate, deprecated monument.

This eatery transports diners to a place that no longer exists: East Germany.

San Francisco’s century-old Christmas Tree.

Instead of faces, these sculptures have barcodes—statements on societal dehumanization.

Across Ring Mountain is a vast collection of Native American petroglyphs unique to the region.

Gold Rush-era tombstones line the park's paths.

This controversial depiction of the "Founder of California" looks as though it was sculpted from mashed potatoes.

A promotional sun clock on the site of San Francisco's great raceway.

Amazing meticulous gardens of personal wood carvings, Hydrangea, Canna, and many other flowers.

The one-time watch house for incoming ships at the Golden Gate now stands abandoned and hidden in trees.

Big gun installations, built over a massive cemetery, now abandoned & hidden in trees.

Guns that have been defending San Francisco since 1904.

Sitting atop San Francisco's tallest hill, a cross honors the victims of the Armenian genocide.