The Guangdong National Nanotechnology Innovation Institute for the Guangdong-Hong Kong-Macao Greater Bay Area (广东粤港澳大湾区国家纳米科技创新研究院) has a mouthful of a name mercifully shortened to 'Guangna Institute' (广纳院). It's a beautiful modern layout fully open to the public and with a regular flow of people wandering around and enjoying the public spaces on the weekend. Unlike the Guangzhou Tower, it looks and feels good both from above & afar as well as from up close as a pedestrian. The development is both futuristic and climate-aware and the larger site is still under construction and is only partly occupied.
The pond near the cache features fish which were a particular point of delight for a three-year-old visiting with seeming construction worker parents sharing a family e-bike when the cache was hidden. He proudly pointed them out to his gleaming parents and then bid farewell with a warm wave to the fish, oblivious to the newly placed cache so close by.
A nano would surely have been the most thematically appropriate, but it wasn't to be.