I decided top research the 'Roman Colleseum' by having found that it is the basis as to where stadium architecture was influenced. Construction of the Colosseum beganin around 70–72AD. The Colosseum underwent several radical changes of use during the medieval period. By the late 6th century a small church had been built into the structure of the amphitheatre, though this apparently did not confer any particular religious significance on the building as a whole. The arena was converted into a cemetery. The numerous vaulted spaces in the arcades under the seating were converted into housing and workshops, and are recorded as still being rented out as late as the 12th century. Around 1200 the Fragipani Family took over the Colosseum and fortified it, apparently using it as a castle.