There’s a “Go, Go, Gowanus” walking tour tomorrow (7/26) at 11AM from the Municipal Art Society. Per an email we received:

Explore the wide banks of Brooklyn’s most famous canal. Before crossing one of the oldest retractile bridges in the United States, we’ll visit the Carroll Gardens Historic District, a singular brownstone enclave distinguished by a remarkable street plan. Learn the history of the canal and the surrounding, though faded, industrial zone. Leader: Matt Postal, architectural historian. Meet at Smith and President streets, outside the drug store. (Transit: F, G trains to Carroll St.) Weekday and Weekend Tours: $15, $12 for MAS members. Reservations are not required, unless otherwise noted. Fees are payable at the beginning of each tour. Reserved-tours can be paid online at www.mas.org/tours until 4:00 p.m. the Friday before a weekend tour or until 4:00 p.m. the weekday before a weekday tour or by calling 212-935-2075. Tour hotline: 212-439-1049.

Be there.