Only six people can sit inside this delightfully quaint sanctuary.

Its original statue was deemed so ugly, locals called it “Scary Lucy.”

Outstanding collection of 19th century medical instruments includes a life-size figure cast from as many as 200 cadavers.

The walls of this medieval church are covered with perfectly preserved frescos, including a pristine example of the Dance of Death.

This historic Pittsburgh tennis complex is a rare example of natural red clay courts.

This dramatic rail curve was once the target of a failed Nazi attack.

Georges Seurat’s pointillist masterpiece has been recreated in Ohio in topiary form.

Sail through this subterranean show cave that is home to a legend that would go on to name nearly everything around it.

A soon-to-be-forgotten roadside spectacle loaded with local lore.

A grandiose title could not save this mercantile community from obscurity.

This volcano rises like a giant anthill from the plains below, with a road spiraling up to the rim.

You can walk through the first Boeing Air Force One, which famously carried JFK's casket from Dallas back to D.C.

Despite its lavish ornamentation, and wholesome lifestyle of its devotees, this mountain commune has faced its share of issues.

This abandoned dream castle and its cemetery look out over the city that once inspired their creation.

Hundreds of enormous icebergs drift through this waterway every year.

The first and only American institution dedicated to the enduring value of comedy in the United States.

This restored house is like a time capsule of the president's unconventional inauguration.

This unique crypt designed by Frank Lloyd Wright for his longtime friend was not completed in either man's lifetime.

One of Frank Lloyd Wright's greatest—and favorite—architectural masterpieces was almost lost.

Canada's oldest sugar maple has been growing since around 1500.

A sealed test tube said to hold Thomas Edison's dying breath was given to the inventor's friend and mentee, Henry Ford.

The only surviving prototype for Buckminster Fuller's house of the future.

This recycled wax museum may be the only one that features John Travolta in a Bible scene.

One man’s passion for gas stations is on display along the Rio Grande in northern New Mexico.