concrete-lined tunnel
21Mt Evelyn Aqueduct — was a former feature of the Melbourne water supply infrastructure that was built by the Melbourne and Metropolitan Board of Works The O Shannassy Water Supply (designs prepared 1910 1911). Where the aqueduct crossed the lower lying areas around… …
22Mount Evelyn Aqueduct — Mt Evelyn Aqueduct was a former feature of the Melbourne water supply infrastructure that was built by the Melbourne and Metropolitan Board of Works The O Shannassy Water Supply (designs prepared 1910 1911). Where the aqueduct crossed the lower… …
23Zanja Madre — The Zanja Madre ( Mother Ditch ) is the original aqueduct that brought water to the Pueblo de Los Angeles from the Porciuncula River. It is referred to as an open, earthen ditch which was completed by community laborers within a month of founding …
24Government bunker (Germany) — The Government Bunker (Regierungsbunker) in Germany, officially named Ausweichsitz der Verfassungsorgane des Bundes im Krisen und Verteidigungsfall zur Wahrung von deren Funktionstüchtigkeit [AdVB] (Emergency Seat of the Federal Constitutional… …
25New York City Subway — Top: A number 4 train made up of R142 …
26Green St. Bunker, West End — The Green St. Bunker, West End (Townsville) is also known as the Sidney St. bunker and Project 81. It was built by the Royal Australian Air Force during World War II.The erection of the Green Street Bunker (Project 81) at the end of Sidney Street …
27Eglinton Country Park — is a park located in the grounds of the old Eglinton Castle estate, Irvine, on the outskirts of Kilwinning, North Ayrshire, Scotland (map reference NS 3227 4220). Eglinton Park is situated in the parish of Kilwinning, part of the former district… …
28Fallout shelter — A sign pointing to an old fallout shelter in New York City. Nuclear weapons …
29Glenn Research Center — NASA John H. Glenn Research Center at Lewis Field …
30Contra Costa County, California — County of Contra Costa   County   The west face of Mount Diablo, the most notable …
