Park Row, or Crime Alley, is the part of Gotham North where Thomas and Martha Wayne were killed in front of young Bruce by Joe Chill. The orphaned Bruce was comforted by the local resident Leslie Thompkins, but this single tragedy wouldn't be erased from his young mind and it served as motivation to start his long journey and crime-fighting crusade as The Batman. Every year, Bruce Wayne visits the place on the anniversary of his parents' deaths as a reminder of his life purpose.
Dr. Leslie Thompkins runs a free clinic, funded by Bruce Wayne, out of Crime Alley to anyone who has need of it.
After Nightwing's return to Gotham, his first mission on the city was the replacement of a broken lamp post in Park Row and he also lit up a candle in memory of Bruce's tragic past.
Recently, Park Row was reclaimed by the Gotham Authorities and the place was turned into a decent neighborhood once again with help from Wayne Enterprises.