Over 100 towers were built in Bologna during the Middle Ages, but only 22 survive.

This hidden alley near the location of Rome's first theater was the site of a curious miracle.

This ritzy Italian market is built around a statue of an unforgiven heretic who was burned for his belief in an endless universe.

The oldest house in the capital of Silicon Valley.

One of the oldest adobe structures in Northern California.

Today's aerospace industry can be traced back to one man and his gliders.

A life-sized mammoth sculpture marks the spot where the remains of a Columbian mammoth were discovered in 2005.

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

Housed in a memorial lighthouse, this museum relays the history of surfing, beginning with the antics of royal Hawaiian teenagers.

This quirky roadside attraction dives into the many theories surrounding North America's most infamous hairy cryptid.

A burnt orange monolithic dome structure perched on a hillside near Interstate 280.

Olfactory delights in San Francisco's Botanical Gardens.

Art in the form of a winding, man made crack in stone.

A masterpiece in Golden Gate Park by virtue of the artist’s debt.

San Francisco's first World's Fair, dedicated to the wonders of California.

A century and a half of research in the sciences and natural history, still going strong.

Over 315,000 preserved amphibians and reptiles in jars.

The legendary statue-hating superintendent of Golden Gate Park is honored with... a statue.

This turn of the century masterpiece has a mysterious goaty interloper.

The most beautiful Taco Bell in the world even has surfboard parking.

Guns that have been defending San Francisco since 1904.

This private residence was the template for one of the most beloved television homes of all time.

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

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