aqueduct
arch
arch stone
arches
architecture
blocks
blue
bridge
building
canal
chesapeake
chesapeake and ohio canal
clouds
co canal
co canal national historical park
engineering
granite
green
historic
history
landscape
logs
masonry
masonry construction
monocacy
monocacy aqueduct
mouth
nature
old
outdoor
park
piers
potomac
potomac river
reflection
reflection in water
river
rock
sky
stone
structure
tourism
towpath
travel
tree
trees
view
water
waterway
定額
The Monocacy Aqueduct is the largest aqueduct on the Chesapeake and Ohio Canal, crossing the Monocacy River just before it empties into the Potomac River in Frederick County, Maryland, USA.の素材 [FY310115344735]
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