Fragmaps for Foundry VTT (sci-fi, urban)
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Fragmaps Cyberpunk Battlemaps | Foundry Virtual Tabletop
https://foundryvtt.com/packages/fragmaps-free
Fragmaps Cyberpunk Battlemaps, an Add-on Module for Foundry Virtual Tabletop
An excellent map pack I use quite often. If you're not using foundry, you can get the maps here.
His work is awesome. If you use them and have the spare money, please consider contributing to his work.