La Scala, Milan, Italy

One of the most famous opera houses in the world is Milan’s Teatra alla Scala, reminding us of the true foundations of this art as well as a symbol associated with the ‘true opera.’ The opera house was built in 1778 with four tiers with separate loges, and has hosted greats like Rossini, Bellini, Donizetti, and Verdi. One of its most creative features is the concave channel under the wooden floor of the orchestra. This allows the theatre to have superb acoustics and makes it remarkably more superior.