
Pontcysyllte Aqueduct
1863-1873
1863-1873
1850-1859
1852
1866
1842-1880
1850-1859
1862
1874
1859-1865
1859
1865-1875
1883
1872-1884
1850-1871
1883
1840-1850
1862
1840-1865
1849
1848
circa 1870
1867
circa 1881
circa 1880
circa 1875 (original)
circa 1880
1844-1883
1843-1863
1865-1875
1843-1867
1851-1854
1850-1871
1875-1877
1850-1870
1845-1855
1855-1869
1873
1866-1875
1860-1880
1850-1860
1845-1881
1860-1884
1850-1880
1841
circa 1860
1843-1867
1843-1865
1840-1870
1850-1860
1880