英文關鍵字
aerial
architecture
building
chimney
city
cityscape
construction
drone
europe
factory
germany
industrial
industry
landmark
landscape
mine
modern
nordrhein
north
outdoors
power
public
railway
region
rhine
river
ruhr
schwebebahn
sky
summer
sunset
suspension
tower
track
traffic
train
tram
transport
transportation
travel
valley
vehicle
view
westfalen
westphalia
wupper
wuppertal
wuppertaler