Scores of vintage street lamps shine along L.A.’s Miracle Mile.

The haunting "Hell House Altar" is one of the few remnants of an abandoned college that has been a magnet for local legends.

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

A library of rare occult books in Los Angeles.

A floating cat sanctuary on an Amsterdam canal.

A beautiful geyser under environmental threat.

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

A pair of slides and a tree-lined stair corridor have been an urban oasis for nearly 40 years.

This Venice bookstore has resigned itself to constant flooding by keeping its books in bathtubs and boats.

Two thousand artifacts from around the world collected by one woman who loved to travel.

Giant Redwood-themed cafeteria operates under the golden rule, "Dine Free Unless Delighted."

A trash dump made beautiful by nature's power.

Ninety feet off the valley floor is an ancient dwelling put under protection of the U.S. government by Teddy Roosevelt.

A slice of central Asia in the middle of Berlin.

Winding paths and ramshackle mausoleums in the oldest "park cemetery" in London.

A 16th-century horror show built in a lovely Italian garden.

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

Get lost in this haunting fairytale art walk through a man-made eucalyptus grove.

This massive stained-glass masterpiece is thought to be the largest Tiffany dome in existence.

Paranormal experiences in this hotel's room 217 led Stephen King to write "The Shining."

A roaring, awe-inspiring double cascade of icy water flows through woodland Oregon like something out of a Tolkien novel.

A whimsical and twisted animatronic monster tour beneath the streets of Berlin.

James Turrell's total color immersion art installation, hidden on the top floor of a luxury handbag shop.

The largest Art Nouveau complex in the world is a Barcelona hospital with a 600-year-long history.