Casa Fernando Pessoa is the last flat of a poet who wrote as more than one person. Pessoa did not use pen names; he built authors, gave them biographies and let them contradict each other in print, and the museum devotes a whole floor to that company. Another floor is his own library: more than twelve hundred books, most of them marked up in his own hand.
He moved into the first floor of number 16 in 1920, his eighteenth address in Lisbon, and stayed until days before his death in November 1935. He worked as a commercial translator, wrote in the evenings, and published almost nothing in book form in his lifetime; he was forty-seven when he died. What he left behind was a trunk of paper. Portuguese scholars have been sorting it and arguing over it ever since, and a good deal of what is now considered his best work came out of it.