A calendar house is a house that symbolically contains architectural elements in quantities that represent the respective numbers of days in a year, weeks in a year, months in a year and days in a week. For example, Avon Tyrrell House in Hampshire was built with 365 windows, 52 rooms, 12 chimneys, 4 wings and 7 external doors.
Examples are very rare and are most often found in European buildings of the late 16th and early 17th centuries. Rose Hall Great House is a calendar house located east of Montego Bay, Jamaica, that was owned by Annie Palmer. The large country estate Mona Vale in Tasmania, Australia, built in the 1880s, is said to have been designed as a calendar house.
Notable examples in Great Britain include Cairness House in Aberdeenshire, Holme Eden Hall in Cumbria and possibly Knole House in Kent.
Bedstone Court, now the home of Bedstone College, is a flamboyant black-and-white mansion, built between 1882 and 1884, designed by Thomas Harris for Henry Ripley, MP and is a calendar house reputed to have 365 windows, 52 rooms (on the first two floors)12 chimneys and seven external doors. The central hall has a magnificent 52 panelled stained-glass window depicting the months of the year, signs of the zodiac, birds associated with the month and the agricultural activity of the month. The building was heavily damaged by a fire in 1996 but was fully restored
Adare Manor in County Limerick, Ireland is an example of a calendar house, having 365 stained-glass windows and 52 chimneys. It was designed by the architects James Pain and Philip Hardwick. Much of the interior was designed by E.W. Pugin.
Castle Grad in the north-western Goricko region of Slovenia, with its 365 rooms, is a Central European example of a calendar house. Abbey-Cwm-Hir in mid Wales is a notable example of Victorian Gothic Revival architecture, with 52 rooms and 365 windows. Built in 1834 by Thomas Wilson, in the 21st century it is owned by Paul and Victoria Humpherston. It has notable collections and embodies interesting interior design ideas. All 52 rooms are accessible on tours, and everything can be touched.