These sub-farmland caves are home to a majestic stalactite known as the "Crystal King."

The 25th President's marble casket can be visited in this classical Ohio tomb.

Mausoleums, astronomy, and animatronic dinosaurs at this memorial to an assassinated American president.

Ohio's 19th-century communist micro-society.

A record-size collection of wild-haired troll dolls tells the story of the mythical creature's roots in Scandinavian folklore.

This small plaza encourages people diagnosed with cancer to never give up hope.

A graceful natural rock formation stands astride the point where the Gulf of California meets the Pacific Ocean.

This popular tourist cave was ignored for almost 200 years before being mined into an attraction.

Uninhabited islet in the Caribbean is the sanctuary of giant lizards.

Cavernous opening completely encased in Karst limestone.

Just outside the Ohio Supreme Court sits a testament to justice.

This whimsical campus lawn is dotted with large sculpted numbers and hidden mathematical formulas.

A bronze of the man in all his sinewy glory celebrates his longtime connection to the Ohio city.

An unassuming 13-acre park is home to over 12,000 roses.

The oldest attraction in Disneyland is a prehistoric stump that Walt may have bought for his wife.

One of the richest places in the United States has a cursed street.

A second generation sun-powered marvel lights up the night.

This quirky UFO-shaped curiosity is often mistaken for the airport’s control tower.

An iconic location along the Los Angeles River where countless movie scenes are filmed.

The blinking light atop the iconic landmark has been sending secret messages for decades.

The space-age building is home to one of the few remaining rotating restaurants in America, and the only one that inspired a 1980s sitcom.

Hollywood's oldest hotel is the site of the first Academy Awards, the birthplace of Marilyn Monroe's career, and the home of Montgomery Clift's ghost.

This opulent hotel has been visited by Spider-Man, Charlie's Angels, and the Ghostbusters.

This glamorous old building is said to have inspired the Tower of Terror.