A crumbling Beaux Arts monument to the Bay Area's age of rail.

"A hideous albatross in the Hudson River Valley."

A "haunted" landmark on the coast of Southern California.

The giant pair of sexy legs sticking out the window of this costume store have become its main draw.

Antiques by the Bay.

A hidden alley in urban Baltimore is a haven for graffiti artists.

This landmark cemetery in Boston was created more than 300 years ago.

The crown jewel of the Queens Museum is a nearly 10,000-square-foot architectural model of the city originally built for the 1964 World's Fair.

Oldest building in California still in use.

Hidden behind Lincoln's head is a 70-foot-long chamber containing enamel plates documenting American history, sealed in a teakwood box in a titanium vault.

Every last book in this bookstore is signed by the author.

This palatial botanical garden is home to one of the largest pipe organs ever installed in a private residence, and a piece of Wood's cycad.

Wedding chapel's mysterious spiral staircase said to be miraculously constructed.

Hundreds of drawings left by the land's previous inhabitants remain mysterious.

The palatial McDonald's that inspired Wesley Willis.

One woman's Viking Castle on Lake Tahoe.

The illuminated falls are a gem in North Cascades National Park.

Manatees congregate around a power plant's discharge canal where the water is especially warm.

Collection of skeletal systems from the "world's leading supplier of osteological specimens."

These ancient ritual mounds are our best window into the culture of the ancient Mississippians.

Every year, over 25,000 monarchs overwinter in Pacific Grove.

An 18th-century Spanish watchtower made entirely of seashell and concrete.

The home of one of America's most wealthy industrialists is now a historic site that remembers a more decadent time in the country's history.

A comprehensive collection of Pez dispensers.