The main event of the town's calendar in June is the Keswick Beer Festival, a two-day event that attracts more than 5,000 participants each year. July is marked by the opening of the annual Keswick Convention, an international gathering of Evangelical Christians, described in 1925 as "the last stronghold of British Puritanism", promoting biblical teaching and pious lifestyles. Among those associated with the Convention have been Frank Buchman and Billy Graham. The event has grown from a single week to three weeks, straddling the latter part of July and early August.