Colosseum

The battle arena of Italy's famous monument 'Colosseum' is set to get its original look by 2023. Winning an 18.5-million euro bid, an architectural firm named Milan Ingegneria is eyeing to install a high-tech retractable floor. The retractable floor will enable visitors "to see the majesty of the monument" from the centre. Earlier, it had a wooden floor, which was connected to rooms that acted as waiting rooms for gladiators.