Aside from their astounding aesthetics, there is no singular element that defines or unites the most beautiful theaters in the world. Some are centuries old, some less than a decade. A handful are designed in opulent, ornate styles of the 19th century, others with sleek curves and smooth surfaces of the modern age. Many don’t even have the same purpose: The theaters on this list are opera houses, concert halls, and even movie theaters. Nonetheless, they shine through for their unique designs, creative innovations, and stunning appearances. Below, journey with AD to the 11 most beautiful theaters in the world.