Architecture event: provide a site in the host city and make it a design competition, and then build the winner. The hall of submitted 3D models would be a great attraction.
Architecture and art done on ArtStation alone is superior to anything that is funded by your local government usually.
Taste is just nostalgia with extra steps. Whatever the prestige class was building when the present adults were kids (or during a noteworthy economic boom time) is "good architecture", and everything else sucks.