His mother made her acting debut there.
Prince Albert of Monaco was back inside the Bucks County Playhouse to see where it all began.
The prince is the son of Oscar-winning actress Grace Kelly.
It was his first time at the playhouse, and workers wanted to make the visit special.
Prince Albert was given a tour of the facility and presented with a picture of his mother performing there.
Kelly is the subject of a brand new exhibit opening this week at the Michner Museum in Doylestown.
You can check that out from Monday through Jan. 26.