Rushton Hall, Northants.

Rushton Hall is a most impressive place built around a square central courtyard. It dates from 1438, but much of the present structure seems to be Victorian. It’s now an up-market hotel, but they don’t mind visitors having a look at the public rooms (on the ground floor facing the water), and if you ask in the bar, they’ll probably give you a booklet about the history of the place. If you have a serious interest you could contact the general manager about your visit in advance. The public room interiors and ceilings are quite impressive, as is the courtyard. The bar, housed in what was the great hall, with stained glass windows, is the most impressive room. The house changed hands in 1853 for £165,000, at a time when the average dwelling cost several pounds, but it was sold in the 1950’s for £1.
The hotel reception is to the left of the main entrance, and the public rooms and bar are further on in the same direction. The drinks, predictably, are expensive 🙂
It seems there are some public access days: Hotel website.