You always take a picture of this artwork , or a selfie in front of it/with it in the background. However I guess you do not dare or take time to visit inside. I took the plunge for you! Oh I visited last year in november 2019, just before the Covid pandemic. Take a break and enjoy my virtual visit !
I had booked the 1hour visit of the Opera online. Easy to make on https://www.getyourguide.fr for a reasonable price (26.43€). Be careful if you want a French tour for instance as they sell very quickly and none was available on the same day! Not a problem if you speak English as you will easily find a tour which fits your schedule.
As I had to wait for about 50 minutes before my visit, I decided to check the availability for food/drinks around.
Building from the outside
A very informative and enjoyable visit, I highly recommend it !