Castle Hardwick Hall in Bolsover

You're standing at Hardwick Hall, on a hilltop between Chesterfield and Mansfield, with the Derbyshire countryside spread out below. Take a look at that front. What jumps out? Windows. Huge ones, and lots of them. Back in the 1590s glass was a luxury, which is why people still say: Hardwick Hall, more glass than wall. To make room for all that glass, the chimneys were tucked into the inner walls instead of the outside ones.