Visit St. Joseph's Cathedral, a stunning neo-gothic church located in the heart of Hanoi Old Quarter. Built in the late 19th century, the cathedral is an architectural masterpiece with its towering spires and intricate stained glass windows. Step inside to admire the grand interior, adorned with beautiful religious artwork. If you're lucky, you might even catch a choir performance or a Sunday mass. Take a moment of tranquility in the peaceful courtyard surrounding the cathedral.