Although this church is no longer active, it has a long and interesting history. It housed the National Assembly, it was heavily damaged during WWII bombing and then was one of the first buildings the city reconstructed after the war and in 1963 the US president John F. Kennedy gave a speech in this very church.
Daily: 10 a.m. - 5 p.m.
Free.
Wikipedia https://en.wikipedia.org/wiki/St._Paul's_Church,_Frankfurt_am_Main
Official Website https://frankfurt.de/frankfurt-entdecken-und-erleben/sehenswuerdigkeiten/fuer-historisch-interessierte/paulskirche
More information on Frankfurt's official website http://www.frankfurt.de/sixcms/detail.php?id=317578&_ffmpar%5B_id_inhalt%5D=5021017
Phone +49 69 21234920
Address Paulsplatz 11, 60311 Frankfurt am Main, Germany
Coordinates 50°6'40.295" N 8°40'50.724" E