Librería Anticuaria Sanz is a hidden gem among the used bookstores in Gran Vía. Specializing in antique and rare books, this bookstore offers a unique collection that will transport you to different eras. From beautifully bound classics to historical manuscripts, you can find a treasure trove of literary gems here. The knowledgeable staff is always ready to assist you in finding the perfect addition to your collection. If you're a book collector or simply appreciate the beauty of old books, Librería Anticuaria Sanz is a must-visit.