|Copehill Down, (c) possibly Think Defence|
The British Army also have a number of urban training areas, the best known is Copehill Down on Salisbury Plain.
Sorry, that's no urban training area, it's a rural training area.
Important tactics from urban combat (going from building to building through the connecting walls without ever going outdoors, moving from roof to roof, moving through sewers) appear to be physically impossible there.
The German term OHK ("Orts- und Häuserkampf"; settlement and building combat) would fit better.
Sad thing is that the above training facility looks actually quite elaborate and good in comparison to some others. Training areas everywhere are very unrealistic and good training on normal terrain (with damages to be paid to civilians) have become even more rare than they were during the Cold War. (I write this only because I am not 100% positive that my strong suspicion about such exercises having stopped a long time ago is true.)
Unrealistic training - and it is unrealistic in many ways, not the least because some lack of realism is utterly necessary to avoid accidents - is a major problem of today's modern military forces. It does contribute to the in my opinion low readiness for actual high end warfare.