Rocky
Philly residents hardly consider this movie set a secret. It's one of the best tourist locations! For a visitor in Philadelphia, you can see the Liberty Bell, grab a cheesesteak from either Pat's or Geno's (there's a huge rivalry), or visit the art museum in Fairmount. Be warned though, you'll have to climb up the stairs as Rocky did in the original movies. You'll probably see people running up and down the staircase because while it was a fictional movie, the workout routine has become a citywide staple.