Valderas Museum, a map that closely resembles the J. Paul Getty Museum, was playable during “Modern Warfare II’s” beta but did not appear in the game’s official release.
[The map resembling the Conservatorium Hotel] is still in the game’s active map rotation.
Activision retroactively removed all mentions of the map [based on Singapore’s Marina Bay Street Circuit racetrack] from its official channels without comment.
The article hints at copyright issues, but doesn't address whether the maps are sufficiently detailed and accurate to facilitate real world planning. (This article doesn't really discuss it either.)