Colosseum 3D
https://itunes.apple.com/us/app/colosseum-3d-interactive-virtual/id672620829?mt=8
Free version is very short view, but interesting
Sistine Chapel 3D
https://itunes.apple.com/us/app/sistine-chapel-3d-interactive/id639603021
fotopedia Paris, free
https://itunes.apple.com/us/app/fotopedia-paris/id427149531
fotopedia Italy, free
https://itunes.apple.com/app/id568886129
fotopedia China, free
https://itunes.apple.com/app/id533413751
Dreams of Burma from National Geographic, free