The Cathedral of Saint Stephen, located in Vienna, Austria, is a stunning example of Gothic architecture. Construction began in the 12th century, and the cathedral was completed in the 15th century. Its iconic steeple rises 136 meters high, making it one of the tallest structures in the city. The cathedral is known for its intricate tile roof and beautiful stained glass windows. Inside, the cathedral features a grand interior with impressive altars and chapels. The Pummerin, a large bell, is one of its most notable features, weighing over 20 tons. The cathedral serves as a significant religious site and a popular tourist attraction in Vienna.