architecture
britain
british
canal
canal lock
construction
control
countryside
design
engineering
england
entrance
flow
gate
gates
gateway
heavy
historic
history
industrial
industry
infrastructure
inland waterway
landscape
lock
lock gate
locks
logistics
natural
navigation
outdoor
outdoors
peaceful
rural
scenery
scenic
shropshire union
structure
technology
tourism
transport
transportation
travel
uk
water
waterway