Faneuil Hall, Boston National Historical Park, 2015.

This old market building, built in 1742 and enlarged in 1806, sits on the site of the old town dock. Town meetings held here between 1764 and 1774 heard Samuel Adams and others lead cries of protest against the imposition of taxes on the colonies. Frederick Douglass, William Lloyd Garrison and Lucy Stone brought their struggles for freedom here in the 19th century. Today, market stalls on the first floor service shoppers much as they did in Paul Revere's day. Admission: free!