A common entry point to the Griffith Observatory trail holds its own wonders.

Frank Lloyd Wright died a year before construction on his largest public project even began.

Thriving meadows span a rooftop in one of Brooklyn's most heavily industrialized neighborhoods.

The sounds of the world's largest fully functioning pipe organ dazzle shoppers at a Philadelphia Macy's.

Visit the monolithic tomb of America's most famous general.

The first rural cemetery west of the Mississippi is home to the elaborate tombs of St. Louis' local beer barons.

Behind an abandoned storefront is an example of pioneering 1930s gas station architecture.

Atlanta's strange assortment of concrete pillars inspires reflection in some, confusion in others.

One North Dakota man's vast collection of rare rocks, polished orbs, and geological wonders.

A deserted hodgepodge of experimental structures designed by nearby university students.

The ruins of a medieval seminary some say is the oldest university site in Scotland.

Though tiki culture has gone in and out of fashion, the Tonga Hut has always been flying the flag in Los Angeles.

Legendary frontman of the Doors looms in this giant mural by famed Venice muralist, Rip Cronk.

The beautiful 1920 Pantages Theatre remains hidden just underneath the LA Downtown Jewelry Exchange.

One of the world's longest murals depicts the history of diversity in Los Angeles.

The site of a classic series of Laurel and Hardy pratfalls.

Los Angeles's oldest cemetery allows visitors to trace the history of this proud city.

From silent movie theater to rock &roll palace and beyond.

"The Star Factory" cranked out Hollywood stars like nobody's business.

One of Hollywood’s favorite government buildings.

Lucha Libre (Mexican Wrestling) themed taco shop.

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

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

A sign at the end of the Santa Monica Pier marks the traditional end of the legendary American highway.