The document describes several historic palaces and buildings in Barcelona, including details about their staircases, courtyards, and windows. It mentions the Berenguer d'Aguilar palace which is now part of the Picasso museum and notes the 15th century Gothic courtyard. It also provides brief descriptions of architectural elements of the Castellet, Meca, Marquesos of Llió, Cervelló-Guidice palaces and the Santa Maria del Mar church.