The highest point in Washington state is a volcano covered in glaciers.

These enduring murals depicting a distinctly Marxist tribute to capitalism could not even be defeated by McCarthyism.

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

This remarkably well-preserved Egyptian plinth is pretty well traveled for a giant piece of stone.

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

When you visit his grave, be sure to rub the Great Emancipator's nose for good luck.

Despite a legend that says this highest peak in Oregon was climbed in high heels, scores of people have died on its slopes.

Largest Roman Catholic church in North America.

An ancient capital city that dates back 3,000 years and harbors many surprises.

Ancient serpentine sacrifice holder that has stood the test of time.

"the sweltering inhabitants of Charleston and New Orleans, of Madras and Bombay and Calcutta, drink at my well . . . The pure Walden water is mingled with the sacred water of the Ganges."

This elaborate towering structure was once famed for its revolutionary height.

Four, 18-foot-tall badminton shuttlecocks lie scattered about the lawn of a Kansas City museum.

This famous bridge twisted itself into oblivion, but not for the reason you might think.

The Old Courthouse takes visitors on a captivating trip through St. Louis' timeline.

Berthed at the Charlestown Navy Yard in Boston, "Old Ironsides" is the oldest commissioned warship still afloat.

Largest lake in Great Britain measured by surface area.

This ancient Greek place of assembly and marketplace is being revealed layer by layer below the modern Athens cityscape.

There must be a pun in this haystack somewhere...

Climb inside an iron crystal magnified 165 billion times its normal size.

A grand Gothic Revival basilica with stained glass depictions of Montreal's religious history has only one soul resting in its crypt.

A massive sea stack famous for its appearance in The Goonies.

Scattered throughout London are ancient remnants of the city's former bounding wall.

Northern Ireland's Brobdingnagian stepping stones.