Where is Doctor Strange's Sanctum Sanctorum located?

New York

Which musical film stars John Travolta and Olivia Newton-John? Which supernatural comedy features Michael Keaton as a mischievous ghost haunting a home? What is Aurora Borealis commonly known as? Which instrument is commonly used to measure earthquakes? Who released 'In the Wee Small Hours' in 1955, often considered one of the first concept albums?