According to police, the 17-year-old girl got off at the wrong bus stop at around 1:00 a.m. on Thursday.
A man allegedly approached the teen and lured her to Prospect Park, where he sexually assaulted her, police said.
The suspect left the teen at the chapel of Methodist Hospital in Brooklyn.
The victim is in stable condition.
Anyone with information pertaining to this case is asked to call the NYPD's Crime Stoppers Hotline at 1-800-577-TIPS (8477), submit tips online at WWW.NYPDCRIMESTOPPERS.COM or tips to 274637 (CRIMES), then enter TIP577. All calls are strictly confidential.