https://m.youtube.com/watch?v=gYzs7Lrtsx8
https://m.youtube.com/watch?v=dyUndiUlN1M
https://m.youtube.com/watch?v=tBIQ1PmCKTQ
https://m.youtube.com/watch?v=BDmQpsKwTmE
1732- the Royal Opera opens at Covent Garden, London.
https://m.youtube.com/watch?v=0NZFokQsj8E
https://m.youtube.com/watch?v=445nfaA6gdI
2011- The 36-floor Prime Tower opens in Zurich, Switzerland.
https://m.youtube.com/watch?v=k3Vkm2o2AqQ
https://m.youtube.com/watch?v=nxmjF1BIDME