In Soochow gardens these exterior windows are very common and they appear not only flush against the wall but are often layered.
外牆的窗是在磚石上挖成的，是一種室外對室外的窗，又稱「漏窗」或「花牆洞」，在蘇州園林間最為常見。它不僅可使平板的牆面變得活潑，而且在分隔景區時似隔非隔，使景物若隱若現，富於層次。