Ok, so we’ve already established that outdoor summer movie screenings are an amazing activity perfect for summertime in the city.

But how do you kick it up a notch? How about hosting a movie screening on a lawn inside a historic 19th-century prison? And then projecting the movie on the prison’s massive walls? And how about screening a movie that was actually filmed on location in the very spooky setting inside this 19th-century prison?

Yea, that sounds like it will work.

Next Wednesday, July 20 is your chance to see 12 Monkeys in the historic location where part of it was filmed, Eastern State Penitentiary, as part of the Philadelphia Film Society’s filmadelphiaCLASSICS series.

The movie stars Bruce Willis, Brad Pitt and Madeleine Stowe. Set in the future, a convict (Willis) is sent back in time to gather intel about the man-made virus that wiped out most of the world’s human population.

In the movie, Eastern State Penitentiary was the asylum at which Bruce Willis’ character was incarcerated. Other Philadelphia locations in the film include Penn Square outside City Hall, the abandoned Met Theatre at Broad and Poplar, the Greek Revival Ridgway Library at Broad and Carpenter (now the Philadelphia High School for Creative and Performing Arts), Memorial Hall in Fairmount Park, the Philadelphia Convention Center (filmed as an airport!) and Wanamaker’s Department Store (now Macy’s).

Doors open at 8 p.m. and the film will begin at 9 p.m. from inside the penitentiary’s baseball diamond. Bring your own blankets and chairs. You may also want to bring a viewing buddy who you can grip in the throes of horror; there’s nothing like seeing a scary movie at the even scarier location where it was actually filmed.

Tickets are available online. You can also purchase them at the penitentiary’s Bastille Day celebration, this Saturday, July 16.

12 Monkeys Screening at Eastern State Penitentiary

When: Wednesday, July 20, 9 p.m.

Where: 2027 Fairmount Avenue

Cost: $10, $5 for Philadelphia Film Society members

More info: www.easternstate.org