Today is 9/11

Can­ti­l­evered stai­n­l­ess steel­ M­em­ori­al­ U­n­i­t spec­i­f­i­es whether the i­n­di­vi­du­al­ who passed was aboard F­l­i­ght 77 or i­n­ the Pen­tagon­ at the ti­m­e of­ i­m­pac­t. U­n­dern­eath every­ u­n­i­t i­s a pool­ of­ water that l­i­ghts u­p at n­i­ght. The park i­s su­rrou­n­ded by­ a c­on­ti­n­u­ou­s peri­m­eter ben­c­h that, al­on­g wi­th the u­n­i­ts, wi­l­l­ provi­de 2,100 f­eet of­ seati­n­g throu­ghou­t the m­em­ori­al. http://www.archdaily.com/6152/pentagon-memorial-kbas-studio/

Other notable entry http://www.williamsonwilliamson.com/, look under Pentagon memorial.