"An unremarkable brown brick building"--150 years of Blue Plaques

Many historic cities around the world are notable for their extensive preservation grand architecture or of entire neighborhoods of historic buildings. London has used "Blue Plaques" to commemorate less visible, but not less noteworthy, aspects of its architectural history. The program celebrates its 150th anniversary this year.
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In London, Blue Plaques Mark the Noted and Notorious
By Katie Engelhart
The New York Times
November 10, 2016