The legendary building that needed ghostly approval before being built.

The fairy tale castle of the "fairy-tale king."

Collection of skeletal systems from the "world's leading supplier of osteological specimens."

A singular collection of hand-built art deco cars are held in a building with style to match.

Playable, historic pinball machines fill this Alameda museum.

A trash dump made beautiful by nature's power.

Commonly referred to as the most photographed Victorian home in the United States.

Come for the speed, leave in love with the desert.

The longest living non-clonal organisms on Earth.

Most-visited and most-photographed slot canyon in the American Southwest.

Dramatic river bend surrounds a natural red-rocked pedestal.

The hike through a narrow river flanked by the 2,000-foot-tall walls of Zion Canyon is one of the best in the world.

Giant, natural amphitheaters made of delicate geological formations called "hoodoos."

Dig for your own trilobites in this goldmine of invertebrates.

This 4,000-foot-diameter hole is touted as "the most well known, best preserved meteorite crater on Earth."

This Arizona observatory is famous for investigations into Martian life, and as the place humans first spotted Pluto.

Concrete strongholds stand guard over the Golden Gate.

A living time capsule of the 1960s Richardson Bay water-front.

Once strictly off-limits, this lower level housing curious and priceless vehicles of the Petersen Automotive Museum is now open to the public.

Ingenious bakery opens up the first Cupcake ATM at their flagship location in Beverly Hills.

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

Hollywood's most famous landmark, the "temporary" sign that has stood for decades longer than intended.

An alley covered with 20 years of bubble gum.

A massive volcanic plug is now a protected area that hosts a number of bird species.