It's not hard to see why the historic Peabody Conservatory of Music's library has been described as a "cathedral of books."

The highest point in Delaware is located under a trailer so this marker across the street will have to do.

A former waterfront market is now in the center of town due to some interesting Boston engineering.

This mosaic dedicated to John Lennon was tended for years by a Beatles super-fan.

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

The miraculous hydrant that saved the Mission District in 1906.

San Francisco's newly reopened hands-on science museum.

This teeny-tiny park built by a San Francisco man in 1962 is mostly stairs.

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

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

San Francisco's urban bison herd has persisted in the face of extinction, development, and disease.

The key to turning shifting dunes into the green oasis of Golden Gate Park.

In all of the 29 years it was in operation, no prisoners ever escaped successfully... or so they claim.

A place of great reverence for Trekkies everywhere, a hero's future birthplace.

Though many were skeptical at first, these animal-specific routes across the Trans-Canada Highway have been a major conservation success.

Fossils, railroads, and waterfalls!

Take a hike to this remote, scenic tea stop in the Canadian Rockies.

Home to the deepest rift anywhere on Earth.

This family mausoleum is steeped in symbolism and looks more like a fantasy location than a grave.

Orcas on display and in the water.

The tech giant built three enormous glass orbs in Seattle so employees could work inside a rainforest greenhouse.

A wall of chewing gum moonlights as collective art.

This famous bridge twisted itself into oblivion, but not for the reason you might think.

Shoreline strewn with the remains of ghostly fallen trees.