In 1694, German mystic Johannes Kelpius and his followers established a community near here in response to William Penn's offer of religious freedom. Members of the "Hermits of the Wissahickon" produced poetry and music, practiced astron…
When completed in 1908, it was significant for its early use of concrete in bridge construction and as the world's largest concrete arch bridge. Reformers of the era praised its utility and design. Connecting Germantown and Roxborough, it reduced …