Lisbon: Belem Tower, Jerónimos Monastery, Cristo Rei, Tram 28, Alfama District Porto: Ribeira, Dom Luís I Bridge, Port Wine Cellars, Livraria Lello, Douro Valley Sintra: Pena Palace, Quinta da Regaleira, Moorish Castle Coimbra: University of Coimbra, Historic Library Algarve: Beautiful beaches and scenic coastlines