Tomb Raider : Anniversary mansion is the best mansion in the whole franchise.
I have played all Tomb Raider games. but nothing beats the mansion in TR Anniversary. not even The mansion in Rise of the Tomb Raider ( even though they are quite similar in some areas ).
The music, the coziness, the gardens, the gym, the swimming pools, Lara's bedroom, the libraries, the music room, the grand hall etc. Everything is so perfect.
sorry to say, but it is better than the mansion in TR3's