A short walk up the hill from the Bishop of Lisbon is the Santa Lucia Observatory. This viewing platform is the most popular one with the best facilities in Lisbon. Facilities were really ordinary. I marked them on Google map at that time, but I forgot what the allusion was. I can't believe this is the famous viewing platform. But when it's sunny, it's pleasant to have a good view of the blue sea, the red roof and the beautiful Alfama area.