Free only if you're prepared to be the only person who doesn't tip at the end, we feel like 'Pay What You Want' would be a more appropriate name for this outfit, which offers English-language walking tours of the Old Town every day at 10:00, 12:00, 14:00 and 16:00, leaving from the Barbican; and tours of Jewish Krakow at 10:30 and 14:00 and 17:00, leaving from the Old Synagogue. Both tours last about 2.5 hours, and no booking is required - just show up and look for their yellow umbrella. Check their website for tour time updates and to see all the other tours they offer (including tours in other languages, WWII tours, Macabre tours, Street Art tours).