What is your favorite clical/romantic piano piece?

I enjoy listening to many composers such as Beethoven, Shumann, Chopin, Scriabin, etc. However, some piano pieces that I adore are Beethoven's Sonata in E Op. 109, Scriabin Prelude Op. 11 no 11., Mozart K 330, Gaspard de la Nuit by Ravel and so on. I would like to increase my knowledge of great piano works. Also, if you do not mind, I'd like to have some recommendations of piano pieces that I can learn to increase my repetioure (and please don't say Yiruma or Twilight).