As Silvia says, any shots taken on private land can be restricted in there use, but shots taken in a public place are OK even if of a building or private land as long as you where in a public place when taking the shot. Of course, taking pictures of people in a public place may need a model release before most commerical sites will accept them. So, to give an example taking pictures of the Bullring from a public road is OK but if you go onto their road/site it isn't. This might include a private road where the public have access like the Bullring, in that case it's a no no, as it still private land.