Founded in 1809, this Park Street Church is on the Freedom Trail and known for a number of historical firsts. Among other things, William Lloyd Garrison delivered his first anti-slavery address here, and My Country Tis of Thee was first sung on the front steps. Very much still an active pro-life parish, it hosts many classes teaching English as a second language, ministers to the homeless, and assists low income families within the city of Boston. Fun fact: this was the tallest building in America for almost two decades!