The cast and crew of the Fx show "It's Always Sunny in Philadelphia" have been in town shooting this week.

Series star Danny DeVito was spotted Tuesday at Logan Circle, just as Hallahan High students stopped at the fountain after school.

DeVito posed with a few young women. The public can watch a scene being shot Friday afternoon on the northwest side of City Hall (15th and JFK).

Contact staff writer Michael Klein at 215-854-5514 or mklein@phillynews.com.