Giant acorn-shaped 19th century gazebo from which suburban Washingtonians gazed upon the original "silver" spring.

An interesting decoration on this historic site, this weathervane comes with as many legends as it does questions.

This 19th-century former train station’s unusual roof shape earned it a rather witchy name.

The uniquely-designed winter home and sculpture studio of Anna and Archer Huntington.

Red sandstone structures dominate this landscape, which has been inhabited for some 5,000 years.

The plants form a living library and laboratory for researchers and students at Michigan State University.

The little-known, 300-year history of the area includes former lives as a bustling tobacco port, parking lot, and industrial dump.

A little slice of Florida face-in-a-hole kitsch, unexpectedly located in a small New Mexico town.

Hidden in the New Mexico desert southeast of Roswell, nine small deep lakes formed inside sinkholes.

This quiet chapel was central to a community of settlers who reclaimed an abandoned fort.

One of the longest water bridges in the world was built over a supposedly haunted swamp in Louisiana.

World Trade Center memorial likened to a woman's sexual organ.

This seaworthy collection was sparked by one man's passion for sailing.

Theater has had many different incarnations but has survived the ravages of time.

This home is steeped in history from, George Washington to George Corwin, High Sheriff during the Salem Witch Trials.

Apparently, the whole cosmos emanates from this plain concrete tower.

Dedicated to the history of the health sciences.

A comedy troupe's collection of bizarre humor.

This small Key West museum is packed with dozens of artifacts that illustrate the life of the iconic playwright.

The R&B singer's modest church guarantees a religious experience, regardless of your beliefs.

A grandiose octagonal home crowned by a large dome stands out among the antebellum mansions.

Detroit’s downtown castle is one of the oldest structures in the city.

American involvement in World War I officially ended in 1921 in New Jersey, three years late and thousands of miles from the battlefield.

Colloquially known as "the lynching memorial," this is the United States' first memorial to the victims of racial terror at home.