Ключевые слова: ancient, antique, architecture, art, book, book shop, bookcase, books, bookshelf, bookshop, bookstore, building, city, crowds, education, europe, european, european city, famous, fisheye lens, information, inside, knowledge, landmark, learn, lello, library, literary, literature, livraria, livraria lello, nouveau, old, overtourism, people, porto, portugal, read, retro, ribeira, romantic, shelf, shop, staircase, store, travel, vintage,