This colonial tavern played host to George Washington, Thomas Jefferson, and other famous early Americans.

This isn't your average roadway—it's actually a National Park and a transportation pioneer.

These lush botanical gardens employ the most purrfect pest control force.

Spanish architects used seized Muslim gravestones to rebuild parts of the fortress.

Pennsylvanian mass grave and possibly mass murder.

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

This Philly cemetery is the eternal home of many famous area residents, including Rocky Balboa's wife.

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

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

Huge masonic hall in Philadelphia with lavishly themed rooms.

America's most famous museum of medical oddities is home to the remains of Albert Einstein's brain.

Dr Barnes' $25 billion private collection of art and arboretum.

Golden and naked, the figure that was once the highest point in New York is all that remains of the second Madison Square Garden.

A failed piece of Orientalism has become the proud symbol of a community.

An 18th-century Spanish watchtower made entirely of seashell and concrete.

A tribute to Ponce de Leon's supposed quest for eternal youth.

This impressive working clock made of 16,000 plants changes its flowers twice a year.

This Niagara Falls tourist trap is a world bright with neon and curiosities that will inspire love, hate, or a mixture of both.

The only presidential monument to display a late POTUS's actual casket.

This retired stagecoach tavern is the oldest building in Cleveland.

Cleveland's giant "free" stamp is a nod to the Civil War, but was misinterpreted for years.

Funded by John D. Rockefeller, this is one of the earliest, and most beautiful, shopping arcades in America.

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

Mausoleums, astronomy, and animatronic dinosaurs at this memorial to an assassinated American president.