Answer: treehouse

AnswerCrossword Clue
TREEHOUSE

Branch headquarters?

TREEHOUSE

Kids' secret club meeting place

TREEHOUSE

Kid's backyard retreat

TREEHOUSE
Kid's hideout
TREEHOUSE
Backyard play area
TREEHOUSEIt might be out on a limb
TREEHOUSEHome for Swiss Family Robinson.
TREEHOUSEPlace of escape for a child.
TREEHOUSEChild's aerie
TREEHOUSEChild's retreat
TREEHOUSEBranch office?