Sketchfab hosts a vast and continually growing collection of 3D models. As of my last knowledge update in September 2021, it featured over 4 million 3D models. The dataset size may have increased since then, as Sketchfab has a large and active user community that regularly uploads new models.1
References
1Liu et al L. Application of Relying on 3D Modeling Technology in the Design of Urban Sculpture. Journal of Electrical Systems. 2024;20(1):176-191. doi:10.52783/jes.675