The Dover International Speedway is home to a towering, concrete-skinned, racecar-hungry behemoth.

In 1787, a group of delegates met at this very spot to drink, be merry, and ratify the Constitution of the United States.

A desiccated merman and a walrus penis bone are among the oddities in this eclectic collection of shipwreck treasures.

Enchanting gardens surround a derelict mansion, all hidden in plain sight behind a stone wall.

In Wilmington's hip Trolley Square neighborhood, a utility box has been repainted to resemble a classic gumball machine.

Yo, Adrian!

Tour the dark and beloved poet's former cobwebbed basement, which may have inspired "The Black Cat."

The sounds of the world's largest fully functioning pipe organ dazzle shoppers at a Philadelphia Macy's.

The first American department store, and home to the largest operating musical instrument in the world.

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

A tiny monument to the unsuccessful attempt by Thomas Jefferson to place the prime meridian in Washington.

A railroad tunnel that, upon its completion, was considered one of the engineering marvels of the modern world.

This former fire tower is now a rustic observatory that offers amazing views of eagles, hawks, and the Appalachian Mountains.

Honoring combatants from Portsmouth who served in Cuba and the Philippines during the Spanish-American War.

Dedicated to a veritable Houdini among P.O.W.s who escaped imprisonment on five separate occasions.

Get up close and personal at this Fresnel Lens.

This landmark honoring a local beer brand is an iconic part of the Minneapolis skyline.

The final resting place of a prominent Black American farming family sits in the shadows of an IKEA store.

This unique structure is the only one of its kind in Virginia.

This little brick tunnel built by Confederate forces was used to conduct surprise attacks on the railroad.

The only National Monument ever to go missing for nearly 50 years then resurface in a dump.

At 207 feet, one of the world's longest continuous escalators.

The national park was once a plantation estate.

Architecture lovers won’t stop touching the National Gallery's 19.5 degree marble prow.