This tiny structure was built by the creator of the Brooklyn Bridge.

One of New Jersey's oldest surviving buildings still bears the mark of our former British overlords.

The final resting place of many of New Jersey's most famous residents, including U.S. history's most in-vogue antagonist, Aaron Burr.

The mysterious canine hides atop a drain pipe on the back of the building, some say as a sneaky shoutout to Yale.

Nassau Hall has served as army barracks, a museum, and played a key role in the American Revolution.

This Delaware River bridge is emblazoned with a catty slogan from a more prosperous time.

This colonial mansion has been home to a staggering number of American historic figures.

A giant bronze coil of feces is both a tribute to doggie defecation and a reminder to pick it up.

The highway's southernmost spot is a beloved local attraction.

This staircase in a lush tropical grotto was built by enslaved laborers and renamed to honor Queen Victoria's role in ending slavery in the British Empire.

This fairytale castle was built as a show of power but was nearly torn down thanks to its history of torture.

These wire animal sculptures commemorate the exotic inhabitants that once called the Tower of London home.

The final resting place of the businessman-turned-astronomer who helped discover Pluto stands near his observatory.

One-of-a-kind preserved ruins of an abandoned 1880s church in Chicago's Pilsen neighborhood.

This cheerfully-named branch of the Chicago River is the fetid result of years of blood, entrails, and meatpacking waste.

These abandoned grain silos and tunnels are an urban exploration dream.

A historic and oft-filmed prison stands in a Chicago suburb.

What was once the second largest steel mill in the US is now a sprawling complex of modern ruins.

This tiny historic jail along Route 66 is the perfect fit for exactly one criminal and their partner-in-crime.

This abandoned 19th century orphanage started as a boarding school for children of Civil War veterans.

The carved remains of a 200-year-old oak tree memorialize the namesake of the iconic "Wizard of Oz" character.

The empty tomb that houses the memories of Roy Bertelli's revenge.

One of the largest carillons in the world, this giant instrument has 67 cast-iron bells played by a keyboard.

The poet’s boyhood home is now dedicated to celebrating his life and legacy.