A lonely house representing railroad history tells the stories of those who rode the rails.

This sky-high radio mast is formerly the tallest man-made structure in the world.

The world's tallest turtle riding the world's largest snowmobile.

This simple badlands butte is the highest point in North Dakota and may be the only high point to charge admission.

The oldest still-existing mosque in the United States sits in a remote prairie in North Dakota.

The remnants of an early American attempt at missile defense.

The unbelievably opulent home built for an infamous newspaperman.

Nancy Thompson's Home from "A Nightmare on Elm Street."

California's own medieval Italian castle, authentic down to the 300-year-old iron maiden in the dungeon.

One of the ghostly stops along Route 66.

No matter what it might seem like on film, most scenes filmed on a plane are filmed at this LA studio.

The oldest burial ground in the city, final resting place of city founders, Ohlone natives and murderers alike.

San Diego's most historic and haunted home.

The "Fun Spot of the Desert" is now a haunting ruin, and a reminder that putting a water park in a desert is a bad idea.

The site of murders and Satanic cult gatherings.

The ghost town that ended up on Ebay.

Standing in a state of "arrested decay," this ghost town allows for a detailed peek into Gold Rush life in an unusually harsh climate.

This naturally heated mountainous creek has created a group of neon blue pools of potentially deadly boiling water.

The "world's biggest dinosaur" once housed a creationist museum in its abdomen.

The largest drain hole in the world.

The lowest point in North America is home to an undrinkable pool surrounded by fields of geometric salt flats.

The remains of a ruined mansion memorialize the 1906 earthquake.

The final resting place of a space program monolith.

Abandoned bridge hidden deep in the San Gabriel Mountains.