The Most Attractive Building-Interior

I decided that the most attractive building in the world was St. Basil's Cathedral, in Moscow. The first of the following images, from Google Street View, is the cathedral from within Red Square and the second is from outside Red Square.

But that was from the exterior. The most attractive building in the interior is the Hungarian Parliament Building. This building is like being in a dream world. What makes it stand out is the use of color. Many buildings can match this one in form but this building really makes the most of color. All of the following images are from Google Street View.