In the shadow of York Minster, right in the heart of the city, Treasurer's House is a unique place to visit. It's a National Trust property, previously owned by Frank Green, an eccentric who created his version of what an historic house should be. He mixed different architectural styles and time periods alongside a remarkable collection of antiquities and art to create the house you see today. For children, there's a 'spot the figure' trail running through the house as well as special activities during the school holidays. The cellar tour (extra charge) is well worth doing to hear the story of the Roman ghosts spotted in the basement a few decades ago. There's a cafe that's free to enter and a little garden too.