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

This traditional garden in the San Fernando Valley doubled for Star Fleet Academy, and is irrigated entirely by wastewater.

This star-studded Old Hollywood restaurant is where fettuccine Alfredo made its United States debut.

High on a hill overlooking Los Angeles lives a world famous, high power conical Tesla Coil.

Contemporary art inspired by natural history and science drawing on ancient techniques in a modern world.

Over one million bird-related artifacts await.

One man's homage to the sun continues to grow like a glass fractal.

The "Seinfeld" diner.

Dedicated to the art of hunting, with juxtapositions of contemporary art.

A glittering South Asian anomaly in a wealthy Los Angeles suburb.

A modern mechanical planetary system, part of a 10,000 year clock.

No telescopes, no power, no gift shop: The Observatory of Chichen Itza, one of the world's oldest observatories, takes astronomy back to basics.

Hidden in Central Park's Ramble is a troublesome cave buried just beneath the surface.

This midcentury LA bar was the birthplace of tiki culture.

Where the leftovers of love affairs can live on forever.

An underground mansion with fruit-bearing trees and grapes growing beneath the surface of central California.

Here lies Lilly E. Gray, an alleged "victim of the beast," but the reason long remained a mystery.

A museum devoted to bringing to light forgotten or neglected histories through exhibitions, education and public programming.

A lush green oasis in the middle of Chicago.

This communist country can still appreciate its fragrant past.

Mexican food and folk art.

A visionary, futuristic sculpture in Los Angeles that never met its extraterrestrial potential.

The programmatic glory of LA's giant whiskey barrel building has become an upscale reminder of the city's kitschy roadside past.

"Looks so real, it's scary!"