National Mall exhibition shows monuments aren’t set in stone : NPR

Children activating the installation America's Playground: DC by artist Derrick Adams in Constitution Gardens on the National Mall.

A.J. Mitchell/Monument Lab

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A.J. Mitchell/Monument Lab

Children activating the installation America's Playground: DC by artist Derrick Adams in Constitution Gardens on the National Mall.

A.J. Mitchell/Monument Lab

Kids are running all over a temporary playground in the middle of the National Mall. It's part of