The French Quarter is the historic heart of the city, known for its lively nightlife and colorful buildings with cast-iron balconies. The wildly popular Bourbon Street has jazz clubs, Cajun restaurants, and lively bars serving strong-tasting cocktails. Quieter streets lead to the French Market which provides delicious food and local crafts, and to Jackson Square where street performers entertain in front of St. Paul's cathedral. The towering Louis.