Deans staircaseGeometric staircase in St Pauls Cathedral London Created by Christopher Wren the staircase uses no pins to hold it in place and is held together by tension between the top and bottom step and the millimeter of overlap between stairs

Tags: architecture, deans, staircasegeometric, staircase, pauls, cathedral, london, created, christopher, wren, pins, hold, held, tension, bottom, step, millimeter, overlap, stairs


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    This is a picture I took at Peyto Lake Banff National Park last summer Collection


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