Parkour and Gymnastics room ideas?

Well, My friends and I made an agreement with a man, he said he would do the best he can do to give us an area to parkour. All we had to do is give him what we need (like blueprints of the area and whatnot) and we could start a fundraiser to actually build the place or whatever. He would Promote it. Well, My friends and I agreed that parkour shouldnt be about using the same place over and over again, but to find different places to do it (like in public). So we decided that we wanted a mat room. like a gymnastics room so we could train. (our town doesn't have a gym like that) But now i need ideas. I was wondering if you guys could post links, pics, or just ideas of gyms and things we could use. Well, i think thats it! Thanks.