The unique traffic pattern named for an influential urban planner is also known as the Pedestrian Scramble.

A botanically themed auditorium blooms within the world’s last operating double-decker theater.

A hidden gem in the middle of the city's infamous Jewelry Quarter.

Colorful curls of hand-blown glass form a captivating tower in San Antonio's Central Library.

Three hundred years of preserved Spanish colonial history in San Antonio.

A gorgeous garden oasis with winding paths, stone bridges, and a troubling history.

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

An artsy hidden staircase leads to breathtaking views of San Francisco.

The unbelievably opulent home built for an infamous newspaperman.

This rare example of a "tidefall" is a spectacular drop from the cliffs down onto the beach.

An inconspicuous footbridge beloved by San Diego locals.

After starting as a whimsical tourist attraction that eventually found its way to ruin, these renovated canals offer a lush and exotic locale on the Pacific Coast.

A Swedenborgian glass church surrounded by redwoods sits perched atop a massive landslide area.

One of the most scenic stretches of road in America winds between some of the country's oldest trees.

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

Each year these high desert hills are absolutely covered with poppy flowers in a surreal show of nature.

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

Hollywood's most famous landmark, the "temporary" sign that has stood for decades longer than intended.

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

Crypt mausoleum in cathedral's basement contains relics of third century Roman martyr, Saint Vibiana.

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

A huge musical instrument played by the ocean.

Abandoned for decades, trains still pass through the now-restored remains of one of Madrid's first metro stations.

This semi-secret storybook hedge maze is also the oldest garden in the city.