Maya Pyramid 3D model is available on CGTrader for $49. Original author: Sergey. Specs: 228960 polys, 229294 verts.
OBJ (OBJ, filesize: 205 KB), LWO (Lightwave, filesize: 133 KB), FBX (Autodesk FBX, filesize: 379 KB), C4D (Cinema 4D, filesize: 205 KB), HRC (Autodesk Softimage, filesize: 225 KB), 3DS (3D Studio, filesize: 154 KB), MA (Autodesk Maya, filesize: 317 KB)