Herein. the spatial evolution characteristics of high-level Grade A tourist attractions in the Yangtze River Delta (YRD) urban agglomeration. from 2001 to 2021. are studied by comprehensively applying the nearest neighbor index. https://www.bekindtopets.com/hot-mega-BioSentry-BioPhene-Spray-Disinfectant-15-5-oz-best-find/