The perfectly named cave drop is the deepest in the continental United States, almost matching the height of Seattle’s Space Needle.

This intricate Hindu temple is the largest of its kind outside of India itself and was constructed like a giant puzzle.

One of the largest-ever mental hospitals now sits abandoned, surrounded by 25,000 unmarked graves.

A mysterious monument meant to be a guide into "an Age of Reason" was destroyed after an apparent bombing.

This massive store is home to an eccentric collection of vintage, retro, and peculiar goods.

A Victorian mansion, painstakingly reproduced to appear just as the the Munster's family home did on TV.

More than 21,000 images fill this overlooked gem of a prehistoric site.

Natural sonic phenomenon comes with a grisly legend of murder and blood.

A preserve with 75,000 ancient drawings remains the realm of public – not just scientific – exploration.

The official atomic museum of the United States explores the explosive and productive history of a much maligned energy source.

These Pre-Columbian petroglyphs contain representations of birds, deer, hunters, and even some early Native flute players.

The land is full of geologic eye candy, such as otherworldly spires, mushroom-shaped hoodoos, and prehistoric fossils.

Twice a year, visitors can tour the desolate site that birthed the Atomic Age.

A futuristic temple of light uses prisms and rainbows to create an atmosphere of peace.

Lemon Grove, California is known for its giant lemon...and mummified bodies.

This forgotten Frank Lloyd Wright house is an architectural marvel at the end of a sleepy residential street.

The so-called "Statue of Liberty of Los Angeles" is on a one mutant mission to keep L.A. weird.

From pre-war whiskey cocktails to prohibition-era speakeasy secrecy, this bar has seen it all.

The art and history of the velvet painting are on full display in this Los Angeles museum.

Her final resting place was intended to be modest and private, but the power of her popularity continues to draw visitors.

The remains of the first punk club in L.A.

A shrine to a skeleton saint in the city of angels.

Everyone remembers Laurie Strode from Halloween, but this is the house where most of the blood was shed.

This ultra-modern home clings to the slope of the Hollywood Hills on a precarious stilt.