Founded in the late-1700s by Haitian French immigrants, this soaring Gothic cathedral will strike awe into the hearts of even the least-religious visitors. The 207-foot-high twin steeples pierce the air, topping a vast white building with 81 stained-glass windows. The impressive 20-foot-wide rose window features St. Cecilia, the patron saint of music. Inside, the cream-and-blue interior is decorated with murals of various biblical scenes painted by a local artist in the early-20th century. Check out the 9,000-pound Italian marble altar. Note the pineapples on top of the carved wooden bishop's chair; they're a Southern symbol of welcome, often seen on stair railings and porch flags.