I was going to say one of the best episodes but there are like 11 of them :D
screencap
dollhouse
season 1
episode 7
echoes
1x07
107
image
echos
This Dollhouse screencap contains
school, schoolhouse, street, city scene, urban setting, and brownstone.
There might also be
skyscraper, row house, town house, mansion, mansion house, manse, hall, and residence.