In truth people only purchase the right to pay rent to the county and state. They cannot make any improvement they want, they cannot use the land in any way they please, and they will certainly loose the land if they fail to pay rent(tax).
When that was allowed we came near full circle on property rights from where we were when we fought for independence. Now though, the King doesn't own our land, the 'government' does, and we lack even the rights a feudal lord once held.
It disturbs me greatly that so many of the things our founding fathers faught for have been destroyed already.
I'm not sure of the origins of the property tax, but it was used in medieval England - it goes back at least that far.