英文關鍵字
above
aerial
architecture
bridge
building
church
circular
city
cityscape
de
district
do
dom
douro
europe
european
famous
fly
flying
gaia
heritage
historic
historical
landmark
luis
monastery
nova
old
oporto
outdoor
over
pilar
porto
portugal
portuguese
religion
river
serra
sky
tourism
town
travel
urban
view
vila