An uber-secure, windowless tower of doom in the center of Manhattan is an NSA spyscraper.

Wall Street has a new heroine, a bronze statue of a small but fierce girl.

In the power of this waterfall, Alexander Hamilton saw the potential for industry.

This unassuming retro burger joint was billed as “diner of the future” at the 1939 World's Fair.

The remains of a 19th century spring, and the site of an infamous unsolved murder.

The arch that celebrated the completion of the Lincoln and Victory highways.

This abandoned neighborhood is now a park filled with beautiful trees, wildflowers, and hints of its past.

This bank is widely believed to be the inspiration for the offices of Philip Marlowe, the hardboiled detective featured in a number of Raymond Chandler's stories.

Explore more than 130,000 new and used books in the "world's largest outdoor bookstore."

Where a railroad loops under or over itself to rise or drop more than 70 feet in a short distance.

The neighborhood of Eagle Rock is named after a gigantic boulder with a shadowy surprise.

The mall's looks were inspired by the cowboy extras who used to meet up—and cause real trouble—at this Hollywood hub.

A few iconic structures are all that remain of America’s first outdoor shopping mall.

Bug-devouring flora are the stars of a special wing of the glass conservatory.

The lighthouse central to the 1980s horror classic "The Fog" is, in fact, located in one of the foggiest areas of the Pacific Coast.

A common entry point to the Griffith Observatory trail holds its own wonders.

This quaint museum in a long-running workshop is dedicated to a fixture in New Orleans lighting.

Striking images of New Orleans history, including colonizers, soldiers, Klansmen, scientists, sharecroppers, and more, are depicted in frescoes that line the walls of this transportation hub.

This cathedral dedicated to Louis IX, sainted King of France, holds many secrets.

The second oldest continuously operating bar in Louisiana.

A grassroots community effort in the 1970s led to the creation of this beautiful garden full of delightfully whimsical exhibits.

Take a dip in the world's largest mineral hot springs pool.

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.

Erotic art covers the walls of the largest ancient pleasure palace.