The merits of architectural styles from different regions can be endlessly debated. But there is no question that European tilt-and-turn windows are simply superior in design and function to American windows. During a stay in a hotel in Germany on a rainy day, I marveled at the ability to tilt the windows open at the top without any fear of letting water into the room. And swinging them open is far easier, ergonomically speaking, than the absurd crouch-and-hoist maneuver required to get the windows of my New York apartment open.
Here Matthias Wandel, on a trip to Germany, demonstrates the superiority of the design:
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If you're interested in puzzling out how the mechanisms work, you can investigate the patent drawings here.