The Sovereign
The Sovereign (or Sovereign Apartments) is a residential skyscraper in the East Midtown neighborhood of Manhattan in New York City, near the border with the Upper East Side. It is located at 425 East 58th Street east of First Avenue. The skyscraper was designed by Emery Roth & Sons in the International Style architectural style. It was built in 1973, and is 450 feet (140 m) tall, with 48 flights of stairs.

References
External links
Official website