Complete cast iron arch (in 3 sections) from Thomas Telford's Pontcysyllte Aqueduct. Designed 1794 to 1795, ironwork requisitioned from William Hazledine 1802. Aqueduct completed 1805. Complete cast iron arch (in 3 sections) from Thomas Telford's Pontcysyllte Aqueduct. Designed 1794 to 1795 circa 1802