Step inside the Saint Mary Basilica, and you are immediately enveloped by the massive, uniform masonry of the Romanesque era. This church was built between 1143 and 1164, making it one of the largest and most significant Romanesque structures in Austria. Look for the 'Seckau Crucifixion' group, a masterpiece of twelfth-century wooden sculpture that has captivated visitors for 800 years. The design follows a traditional Saxon pattern with its thick stone piers and small, high windows that cast atmospheric shafts of light across the nave. In the year 1218, this church became the seat of the newly founded Diocese of Seckau, elevating it to the rank of a cathedral. While the two distinctive towers were rebuilt in a Neo-Romanesque style during the nineteenth century, much of the original medieval spirit remains untouched. As a practical tip for your visit, the interior can remain quite cool even during the peak of summer, so you may want to have a light jacket ready as you explore these ancient stone halls.