10. New Amsterdam Theatre
Address: 214 West 42nd St.
On September 10, 1920, actress Olive Thomas stumbled out of the bathroom of a Parisian hotel, horrified by what she'd done, having accidentally ingested an entire bottle of mercury bichloride pills. The dose, prescribed to her philandering husband Jack Pickford for his syphilis, was lethal. The couple was vacationing in Paris at the time on a second honeymoon, and their trip was tragically cut short.
Lucky for New York, Thomas's ghost crossed the Atlantic so that she could haunt the New Amsterdam, where she once acted. Workers and security guards have claimed to see Thomas walking backstage and throughout the halls of the theater, clutching a blue bottle of pills. Thomas often appears to men—is there a more uncomfortable situation than being hit on by a ghost?—though her spirit reacts calmly as long as she's approached genially.