Found close to the Torre dos Clérigos, the Livraria Lello & Irmão is considered the most beautiful library in Europe and one of the most beautiful in the world.

The Livraria Lello & Irmão, also known as the Lello Bookstore, is a renowned bookstore located in the civil parish of Cedofeita, Santo Ildefonso, Sé, Miragaia, São Nicolau e Vitória in the city of Porto, Portugal. It is considered one of the oldest bookstores in Portugal, along with Bertrand in Lisbon. The bookstore is highly rated, being listed as one of the best bookstores in the world by guidebook publisher Lonely Planet and The Guardian. It is placed third in these lists.