alt
architecture
barge
blue
boat lift
brick
building
building exterior
canal
canal lock
channel
closed
concrete
construction
dam
destination
entrance
europe
excursion boat
fortification
free time
gate
historically
history
hydroelectric power plant
industrial ship
industry
landscape
leave
lift
lock
massive
means of transport
mlheim
nature
outdoors
passenger
passenger ship
pleasure
relaxation
reservoir
retaining wall
river
ruhr
rustic
rusty
scenics
shipping
sky
stairs
stuffing
summer
technology
the netherlands
tourism
towpath
traditional culture
traffic
tranquil scene
transport
travel
village
wall
water
water structure
watercraft