Nha Tho (Hanoi Cathedral) Address: cnr Pho Nha Tho & Pho Nha Chung, Nha Tho Area Hanoi Cathedral's twin towers and Gothic arches elicit understandable comparisons with Paris' Notre Dame Cathedral. Nha Tho (also known as St Joseph's Cathedral) is smaller and greyer and in need of restoration; nevertheless, it cuts a striking figure. The interior is even more magnificent. Enter the grounds through the gate and look for the door on the left side of the church (Pho Nha Chung side).