这个真实地点生成效果为什么值得看
Paris 4e Arrondissement, Paris, France 作为“风景城市核心区”案例展示：用 OpenStreetMap 数据重建真实地点，让用户先看到效果，再生成自己的区域。
Paris is familiar enough that viewers can judge the generated result at a glance.
A named arrondissement keeps the example specific instead of vague.
The case adds a scenic European city example to the showcase set.
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