Medieval and Manuscripts
The cross-in-square is the most common church plan from the 10th century until the fall of Constantinople in 1453. This type of plan, with four columns supporting the dome at the crossing, was best suited for domes less than 7 meters (23 ft) wide and, from the 10th to the 14th centuries, a typical Byzantine dome measured less than 6 meters (20 ft) in diameter. For domes beyond that width, variations in the plan were required such as using piers in place of the columns and incorporating further buttressing around the core of the building. The distinctive rippling eaves design for the roofs of domes began in the 10th century. In mainland Greece, circular or octagonal drums became the most common.
How Green House.
Ein Karem.
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