Officials have warned that the 2,000 year old Colosseum in Rome is leaning. About a year ago, they noticed the south side of the Colosseum was leaning about 40cm lower than the north. As reported on the guardian, Prof Giorgio Monti from La Sapienza’s construction technology department stated that this could be the result of a crack in the 13-meter-thick concrete slab below the amphitheater; however, it too early to judge.
