architecture barrier defence defensive engineering England english flood gray Great Britain grey hood landmark London protection river steel thames tidal tide water British Museum classical fluted historical history museum pillars portico Portland stone strength strong support white ancient Doulton doulton fountain flowing fountain glasgow Glasgow Green old peaceful rock scotland sculpture sculptures sightseeing Strathclyde terracotta well Chattri dais dome Indian marble memorial military monument plinth remembrance South Downs war World ceiling roof aged antique barn beautiful country door fence grass green landscape pretty red sky stables tin trees wood wooden evening evening sky high-rise high-rise building KLCC Kuala Lumpur Malaysia outdoor Petronas skyscraper superstructure tall building Tallest Building twin tower