St. Stephen's Cathedral is a famous Gothic church located in the heart of Vienna, Austria. Construction began in the 12th century, and it was completed in the 15th century. The cathedral is known for its stunning architecture, including its tall spire that reaches 136 meters, making it one of the tallest churches in Europe. The cathedral's roof is adorned with colorful tiles that form a distinctive pattern, representing the coat of arms of Vienna. Inside, visitors can admire beautiful stained glass windows and intricate altars. St. Stephen's Cathedral is not only a religious site but also a symbol of the city's history and culture.