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. Authorities are investigating whether an intervention is necessary. Additionally, tests are being conducted to review possible effects from nearby traffic. Some of you may remember back to 2001, when the Leaning Tower of Pisa reopened after being closed for more than a decade as engineers worked to prevent it from falling. Story via the guardian.