(From a 3D print prospective) The tower of Pisa and the Mole Antonelliana are great models and cleaned up very nicely. The other ones are too rough to print, but would probably look pretty good colored and incorporated into a virtual project.
Collection of italian monuments.
Mole Antonelliana, Turin
Palazzo Madama, Turin
Leaning Tower, Pisa
Capitoline Hill, Rome
Contact me for specific request.