Discover an architectural hidden gem on this 1 hour la casa de la seda private guided tour with a glass of cava in barcelona visit the luxurious headquarters of the art of silk one of 18th century catalan societys most influential institutions wander by the silk lined walls and ornaments of its lavish guild room explore its library with more than 3 000 documents dating as far back as 1533 see the majestic presidential office and meeting room