a giant model

Architecture Shanghai Urban Planning Exhibition Center has a giant model of how the city is due to look in 2020 and is the kind of edifice which can't help but collect dust.  As you'd imagine, the cleaning and restoration of the thing is a highly skilled job:

"I’ve been taking out-of-town visitors to the model for years, and inevitably two questions arise during those visits: 1) how do they put new buildings onto the map;, and 2) how do they clean it? I’d long assumed that the modular panels which constitute the hockey-rink sized model were removed, from below, for those purposes. It never would’ve occurred to me that twice per year a small team wanders the map, barefooted, repairing, replacing, and cleaning."

Worth visiting for the photos alone which look like something from a modern indie adaptation of Jonathan Swift.