This Trustees of Reservations tour of the historic Old Manse grounds on Monument Street in Concord explores the evolving landscape, its role in two revolutions, and the symbolism of the Old North Bridge and the Manse as a place of memory expressed in art, literature and history. The event takes place Saturday, March 14, from noon to 5, and the fee is $5. For more information contact 978-369-3909, or email tbeardsley@ttor.org.