a room 3 metres wide
21igneous rock — Any of various crystalline or glassy, noncrystalline rocks formed by the cooling and solidification of molten earth material (magma). Igneous rocks comprise one of the three principal classes of rocks, the others being metamorphic and sedimentary …
22farm building — ▪ agriculture Introduction any of the structures used in farming operations, which may include buildings to house families and workers, as well as livestock, machinery, and crops. The basic unit of commercial agricultural operation,… …
23industrial glass — Introduction solid material that is normally lustrous and transparent in appearance and that shows great durability under exposure to the natural elements. These three properties lustre, transparency, and durability make glass a favoured… …
24Dougga — Dougga/Thugga * UNESCO World Heritage Site Country Tunisia …
25Carlsbad Caverns National Park — a national park in SE New Mexico: site of Carlsbad Caverns. 71 sq. mi. (184 sq. km). * * * Preserve, southeastern New Mexico, U.S. Established as a national monument in 1923 and as a national park in 1930, it covers 73 sq mi (189 sq km). Beneath… …
26York Castle — For the Castle class corvette, see HMS York Castle (K537). York Castle Yorkshire, England …
27The O2 — Infobox building|right building name= building type=Entertainment District former names= Millennium Dome architectural style=Dome structural system=Steel tensioned fabric location=The O2 Drawdock Road / Millennium Way Greenwich Peninsula North… …
28Gasometer Oberhausen — Oberhausen Gasometer General information Location Oberhausen, Germany Height 117.5 m (385 ft) …
29Lewis Hamilton — This article is about the Formula One racing driver. For the footballer, see Lewis Hamilton (footballer). For the steamship, see SS Lewis Hamilton. Lewis Hamilton …
30The House (The Keys to the Kingdom) — The House is a domain that serves as the center of the universe in the Keys to the Kingdom series by Australian author Garth Nix. Anything in creation not in the House, such as earth (the solar system and indeed this universe), is part of the… …
