The Livraria Lello e Irmão bookstore is one of the most visited places in Porto, Portugal.
Hundreds of tourists come every day to get to know one of the most famous and beautiful bookstores in the world.
Extra info from Wikipedia:
Livraria Lello & Irmão, also known as Livraria Chardron or simply Livraria Lello (Lello Bookstore) is a bookstore located in central Porto, Portugal.
Along with Bertrand in Lisbon, it is one of the oldest bookstores in Portugal. In 2011, the travel publishing company Lonely Planet classified Livraria Lello as the third best bookstore in the world.
The premises that stands today has a facade decorated in Art Nouveau, with some features of the Gothic Revival.