The most famous of Harlem’s more than 400 houses of worship is this Baptist church, founded downtown in 1808 by African-American and Ethiopian merchants. It was moved uptown to Harlem back in the 1920s by Adam Clayton Powell, Sr., who built it into the largest Protestant congregation—white or black—in America. His son, Adam Clayton Powell, Jr. (for whom the adjoining boulevard was named), carried on his tradition, and also became the first-ever black U.S. congressman from New York. Abyssinian is now the domain of the fiery, activist-minded Rev. Calvin O. Butts, whom the chamber of commerce has declared a “living treasure.” The Sunday morning services—at 9 and 11am—offer a wonderful opportunity to experience the Harlem gospel tradition.