Mrs. Mallard and her brood are a beloved fixture in Boston Public Garden.

The massive machine creates cracking displays of indoor lightning.

The second-largest cave chamber in the world was discovered in 1898 by a 16-year-old and a friend known as "Pothead."

Explore the largest pure gypsum deposit in the world, and go dune sledding while you're at it.

This redwood is a historic landmark, a town’s namesake, and the dancing sideline symbol of Stanford University.

A mosaic map made of over 100,000 tiles depicts the geological features and sea creatures that live along this San Diego beachside community.

For nearly 50 years, this San Francisco nonprofit has been serving as a mix of recycling center and art school.

Enormous crabs, bioluminescent jellies, and other amazing creatures from the ocean’s depths—some of which are in an aquarium for the first time ever.

This giant shopping mall still holds signs of its automotive past.

Seven ceramic sculptures are scattered around this California college campus.

A chain of bells connect the California Missions and honor the legend of the "King’s Highway."

A futuristic-looking beach house built for the owner of a snack food brand.

The Internet Age began with a transmission from this biker bar.

One man's quest for the ultimate road trip vehicle.

Built for an exposition in 1915, these horticultural displays have stood the test of time.

The world's most famous donkey lives in this pen.

One of the largest trees of its kind in California.

An alley covered with 20 years of bubble gum.

One of the most elaborate displays of Jellyfish is on display at the aquarium.

Honoring the famed folktale author, this California museum looks like it belongs in the Black Forest.

A popular winter vacation destination for migrating monarch butterflies.

This stretch of beach along California's central coast is a busy highway for the largest seal in the northern hemisphere.

It should come as no surprise that the world's largest artichoke lies in the town that calls itself the "Artichoke Center of the World."

Once close to extinction, there is no shortage of elephant seals on the beaches of Año Nuevo State Park.