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Thomas Telford's Pontcysyllte Aqueduct was opened #onthisday 1805 tocarry the Llangollen canal across the river Dee valley. It became a UNESCO World Heritage site in 2005. #ice200 find out more at https://t.co/eX5q91NLpo
#Museum30 Day 23. Gale in the Atlantic, icebergs, Seal Rocks San Francisco and the Straits of Magellan, there are lots of watercolours showing #nature in the William Lloyd notebooks https://t.co/KS7B0goLWk
The Bell Rock lighthouse was first lit #onthisday 1811, engineers Robert Stevenson and John Rennie @ICEScotland @trinityhouse_uk