1- Napoleon III ordered the construction of the Opera House.

2-Was built in a mixture of different architectural styles, Reinaissance, Baroque and Classical styles

3- The purpose of the large ramp on the West side of the Opera is that the Emperor could drive directly into the main hll of the Opera

4- A fire in 1873 delayed the work.

5- Baron Haussmann designed the Opera

6-The purpose of the underground lake is to make the foundations of the building safe.

7- The facade contains four allegorical groups: Music, Lyric, Poetry, Lyric Drama and Dance.