Kolezyum
Roma · run it from your treadmill
The Colosseum opened in AD 80 and held about 50,000 spectators.
OPEN ON THE TVHow: press OPEN ON THE TV on the TV or a computer, scan the QR with your phone, step on the belt. The Street View photos move with your steps; the phone steers, a watch adds heart rate.
Everything is free during the beta. No account, no setup.