Year - contains 365 days (mostly).
In 1881 John Manners-Sutton (aka Lord Manners) struck a wager that he could buy, train & ride the winner of the 1882 Grand National. He bought, trained & rode Seaman to a short head victory in the race (although he doesn't seem to be credited with training the horse). With the proceeds of his bet Manners built a calendar house at Avon Tyrell in Hampshire.
I hadn't heard of a calendar house before but apparently it's a residence that features architectural elements in quantities that represent the respective numbers of days in a year, weeks in a year, months in a year, seasons in a year and days in a week. Avon Tyrrell has 365 windows, 52 rooms, 12 chimneys, 4 wings and 7 external doors.
(The corresponding numbers for my house are 10, 5, 0, 0 and 1.)