Check out Hagia Sophia 3D model on CGTrader for $55. High-quality mesh by Arya06: 899453 polys, 945011 vertices. Textured, UV Mapped.
MAX (Autodesk 3ds Max, filesize: 34.8 MB), BLEND (Blender, filesize: 18.7 MB), OBJ (OBJ, filesize: 26.7 MB), FBX (Autodesk FBX, filesize: 26.1 MB), MAX (Autodesk 3ds Max, filesize: 34.8 MB), DAE (Collada, filesize: 32.2 MB), STL (Stereolithography, filesize: 29.8 MB), TEXTURES (Textures, filesize: 89.2 MB), HRD (High-Res Renderings, filesize: 66.3 MB)