The dolls' house belonging to Beatrix Potter and is on display at Hill Top, Near Sawrey, Ambleside in the English Lakes. Though owned by Beatrix, it wasn't her childhood dolls' house and it wasn't the inspiration for the dolls' house illustrated in The Tale of Two Bad Mice either.
Beatrix acquired the house over thirty years after The Tale of Two Bad Mice was published and she would have been about 73 years old at the time. The house is thought to date to circa 1865.
Beatrix acquired the doll's house from the sale of the estate of an eccentric American lady called Rebecca Owen [d.1939] who lived near Hawkshead (not far from Hill Top).