10) The Plaza del Castillo
The main social square of the old town, this plaza is host to a plethora of famous bars, restaurants, clubs, and casinos. This area was the main haunt of Ernest Hemingway, and every business seems to claim that they were his favorite! If you are a fan of The Sun Also Rises, plan to pay homage to this square, including Cafe Iruna, where Jake Barnes sipped his coffee, and Bar Torino, better known as Bar Milano in the novel.
This is also the location of one of the stages for the nightly concerts, so this is one to more popular after hours locations.