Llibreria Antiquària Farré is a rare and antique bookstore located in the Eixample district of Barcelona. They have a vast collection of rare and out-of-print books, including first editions, manuscripts, and incunabula. The staff is knowledgeable and passionate about books, and they can provide you with valuable insights into the history and significance of the books. The prices are high, but the books are worth it if you're a serious collector or bibliophile.