There is a place to connect your antenna. We do not have cable either, and I was able to use the HD tuner built in to the tv, with my antenna instead of the HD converter I had been using with my old tv. There is also one set of RCA plugs, and 4 HDMI ports so you can plug in older units (vcr/wii/etc.) or new units (xbox one, Roku <--love it, Blu-ray, etc.). Then, using the Source button on the menu, you select the input you wish to use and voila!
Of note, was that I previously could not receive our local CW affiliate with my antenna and previous HD box, but using the same antenna and the built in tuner, we receive the channel as well as several others. With a powered antenna, several other stations can be received as well, and the FCC has a website that shows the signal strength of the stations in our respective areas.