The Isaac Synagogue, built in the early Judaic-Baroque style, was opened in 1644, and was a gift to the city from a wealthy Jew, Izaak Jakubowicz. The design is decoratively endowed with arabesques and arches, yet retains a sober linearity, especially within. There is much to admire, not least the fragments of original wall scriptures. Rabbi Eliezer Gurary runs the place with a smile and is usually on hand to provide information to all comers. A shop inside sells kosher food, sweets, Jewish calendars and other items, and around the back you'll find Szalom Falafel - Kraków's only kosher fast food restaurant (ul. Jakuba 21 - open 10:00 - 21:30 Sun-Thu, 10:00 - 17:00 Fri, closed Sat). Klezmer concerts take place here every Thu & Sun from 15th of March; tickets 60/40zł.