Belem tour - 11:00 on Saturdays and Sundays. Meeting point outside the National Coach museum (tram 15 to Belem). Tour ends near Terreiro do Paco metro station, length: 1.40h.
Alfama tour - 14:00 on Saturdays and Sundays. Meeting point at Saint George castle (on rua do Chao da Feira). Length of the tour: 1.30h.