I was going to say one of the best episodes but there are about 11 of those =D
screencap
dollhouse
season 1
episode 7
echoes
image
1x07
107
echos
This Dollhouse screencap contains
arenaria, brownstone, scuola, casa a schiera, and casa di città.
There might also be
università, bungalow, chalet, cottage, villa, casa padronale, manse, corridoio, soggiorno, mansion, mansion house, hall, and residenza.