Check out Medieval Castle Structure - Tower A 3D model on CGTrader for $45. High-quality mesh by pixelcatlabs: 1079469 polys, 559269 vertices. PBR, Textured, UV Mapped.
FBX (Autodesk FBX, filesize: 5.28 GB), MA (Autodesk Maya, filesize: 5.24 GB), TEXTURES (Textures, filesize: 2.62 GB), MEL (Maya Mel Script, filesize: 2.62 GB)