Rushton Triangular Lodge, Northants.

English Heritage.
This strange triangular building was designed by Sir Thomas Tresham, and constructed between 1593 and 1597. The number three is apparent everywhere in the design, with three floors, trefoil windows, and three triangular gables on each side. It is open several days a week in the warmer months.
I navigated to the location using sat-nav. It’a a curious building and worth a visit if you are in North Northants. The Lodge was formerly part of the Rushton Hall estate, the Hall being about a mile away. The Hall, now a hotel, is worth seeing.