Grand Theft Quantum

This gigantic city pack has everything you need to start creating your own large, AAA, professionally developed, detailed, realistic, grand-scale, Sandbox-Style, Bay-Area cityscapes. It contains hundreds of detailed 3D models, textures, materials, blueprints, and much more! You’ll save countless months of work and possibly even shave years off your production schedule. Let this pack get you and your team up and running quickly!

https://www.unrealengine.com/marketplace/en-US/product/real-city-sf-downtown-environment-mega-pack