Overview
A double-helix ramp. People going up and coming down never pass each other, in a building rare anywhere in the world.
Original supplied text (not re-verified)
A double-helix ramp. People going up and coming down never pass each other, in a building rare anywhere in the world.
References
- [1] ja.wikipedia.org/wiki/%E4%BC%9A%E6%B4%A5%E3%81%95%E3%81%96%E3%81%88%E5%A0%82
- [2] ja.wikipedia.org/wiki/%E4%BC%9A%E6%B4%A5%E3%81%95%E3%81%96%E3%81%88%E5%A0%82
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百科形式の表示に対応しています。内容は公開情報に基づく個別確認が必要であり、現時点で完全な事実確認を示すものではありません。