angle
architecture
beam
beams
braces
bridge
canal
channel
columns
design
diagonal
engineering
frame
green
grid
iron
landscape
link
overpass
power
rail
railway
rhein herne kanal
road
ruhrarea
rust
safe
shore
slant
stable
steel
strong
structural
structure
studs
technology
three
thresholds
track
train
transport
transportation
travel
tree
truss
trusses
water
way
wood