Admission is always free at the Institute of Contemporary Art in University City. Enjoy the art, stay for the AC.

This free art gallery is located in the Frank Furness-designed Fisher Fine Arts Library on Penn's campus. Only library patrons are allowed in the actual library, but the gallery is open and free to the public.

The main train station in Philadelphia offers plenty of space to just chill out and enjoy the cool air. Once your body temperature has returned to normal levels, you can relax outside at the Porch, which features lounge chairs, food trucks, and porch swings. Take time to check out the stunning art deco architecture. Need a better list of things to do? We’ve got you covered

All of the exhibits at the Galleries at Moore are free and open to the public and are meant to promote community dialogue. The space supports the Moore College of Art & Design.

There are a whopping 54 free libraries around Philadelphia in this network. You can find the library in your neighborhood here. Grab a book, find a chair, and chill.

The lobbies of both the original Comcast Center and its newer sister site, the Comcast Technology Center, are both open to the public and very well air conditioned. Grab a coffee while you’re at the technology center, and make sure to check out the interiors of both spaces. There’s a ton of interesting design aspects and art pieces to check out.

No trip to Philly would ever be complete without a stop at Reading Terminal Market. And luckily—for visitors and vendors alike— the indoor market is air conditioned. Stop in to grab some food from around the world and relax away from the humidity.

The Curtis Center is one of those Washington Square West buildings that gives the neighborhood its iconic old Philly look. But, if you haven’t already, take some time to step inside the building, too. There’s a a lot of history and beauty, from the massive mural in the lobby, to the towering atrium. Bonus: it’s air conditioned to perfection and sometimes the atrium has free yoga.

The tourist-friendly spot is open to the public and has places to rest, charge your phone, and get free internet. There are also grab-n-go food vendors and a gift shop.

The Mummer's Museum in Pennsport is open and free to the public Wednesdays through Saturdays. See colorful costume displays, listen to oral histories, even catch a summer concert–all in the comfort of the air-conditioned museum.

During 45-minute self-guided tours at this museum you can learn about how U.S. currency is made and its long history. Yes—tours in the air-conditioned museum are free.

Over in Old City you can check out the Science History Institute (formerly the Chemical Heritage Foundation), which is free to the public and now open on Saturdays.