Few days ago someone posted Fallingwater by Frank Lloyd Wright which I always thought to be one of the most fascinating objects of arch. ever. Now when you asked about the favourite style I was not able to answer right away. But i thought that whatever style Fallingwater represents is my favourite. And Wikipedia says it's called "organic architecture" :) on the other hand I love literally everything designed by Zaha Hadid. So my tastes are all over the place 😆