This one in Lancaster, Pennsylvania, had one of the most unusual designs. Instead of circular or rectangular the tents radiate out from the central tabernacle.
Ocean Grove, New Jersey is an example where the town grew up around a Methodist camp meeting. There is a smaller open air tabernacle and tents, but the central structure is the “Great Auditorium,” which now hosts major entertainment acts.
…and that’s about where I ran out of steam. If you want to see the rest of these from above (or, at least, the ones I’ve found), then check out the link to the Google Map. Many of these sites are on the National Register of Historic Places and most of them are still active with annual camp meetings. I didn’t provide links to information about each of these camps, but I might add that to the map when I get a chance. In the meantime a Google search on the name should get you more info.
I don’t plan to try to track down and photograph every single one of these camps. However, I do have them loaded into my GPS so that if I’m near one on a photo ramble I can pop over and explore. Maybe I’ll even get a chance to attend one of the services. We’ll see how that matches up with the camp meeting experiences from my youth.