Walk into the 19th century without leaving Brooklyn.

This historic address is home to the beloved ball and is an almost totally empty building among the most expensive real estate in the world.

This neighborhood grocery houses a treasure trove of Eastern European delights.

The New York hotel where tragic visionary Nikola Tesla spent his final hours, destitute and alone but for the pigeons.

A Victorian cemetery in the heart of Brooklyn remains a popular mecca of morbid curiosity.

A Manhattan courthouse hides a small but scathing memorial to Holocaust injustice.

A bit of retro transportation flair preserved in the world's largest department store.

From scholastic to sepulchral - now under reconstruction.

This former Norwegian sailor's church is slowly being taken over by ramshackle robot musicians.

Tucked in a nondescript downtown Brooklyn mall is a bar containing a remarkable turn of the century anatomical wax collection last seen in 1920s Berlin.

Become a prohibition rebel.

A crumbling hospital from the 1850s on Roosevelt Island.

A collection of more than 12,000 shoes, displayed in a building shaped like a shoebox.

This unusual structure may be on its way to becoming a cultural landmark in Toronto.

Lost subway station nestled beneath Toronto's busy commuter line.

The Victorian-era greenhouse is stuffed with tropical plants, and open 365 days a year.

A botanically themed auditorium blooms within the world’s last operating double-decker theater.

A series of caves under Castle Hill that once held the prisoner Vlad Tepes, better known as Count Dracula.

A 19th century artistocrat's mansion, turned into a library, hidden in a modern library.

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

A layered tribute to the work of mosaicist Isaiah Zagar.

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

World's first "penitentiary," meant to be humane, drove men insane.

One of the largest underground systems runs under Canada's largest urban center.