setting up and competing swarms.....

Is there a way to encourage a swarm of bees to "nest" naturally on my land, and if they do, is there anything I can do - w/o building a hive - to encourage them to stay?
Also, we have a 15 acre parcel, and I know a family across the road from me keeps bees.....
If I "install" a hive [if that proves the only "way to go"], will the bees fight for territory from my neighbor's bees?
Thanks!
[Although I am allergic to bee stings, I have been considering keeping "gentle"-type bees for awhile, as they're on the property anyways, and I'd like to assist their survival.....]

Good question Julie. I have been wondering about this also.
I also wonder if there are wild bee hives that can be harvested or encouraged. I have 10 acres in the mountains and I see all sorts of bee like creatures but I am not sure if they have hives.
Can a person hollow out a dead tree and create a hive ?