Sir Tresham was a devout Catholic and, like his other building the folly Rushton Triangular Lodge, it is designed with his faith in mind, having 3 wings, shaped like a Y. If you are feeling brave, there's a very narrow steep spiral staircase up to the top, which is worth the view. And mind your head, the doorways are very low!
Although the NT only have a tea/coffee machine on offer, there is a big shady tree in the grounds, so grab your rug and bring a picnic - dogs are welcome on leads as well.
While there, it's worth a gander round the wildflower meadows, the "Snail Spiral Mounds" with a moat has all sorts of of wildlife if you bring binos, or just sit and admire the view for miles around.
