Our Lady of the Assumption Co-Cathedral, Opava

The Co-Cathedral of the Assumption of the Virgin Mary in Opava is the largest and most important Catholic church in the Czech city of Opava, standing on the historic Rybí trh square right next to the city's main square, Horní náměstí, which it visually dominates. It ranks among the most significant sacred landmarks in Czech Silesia.

What is the history behind the church?

The story of the building goes back to the 13th century and the Teutonic Knights, who had been active in Opava since 1204. It was the Knights who gave the church much of the form it still carries today, raising it in the Silesian Gothic style typical of the region. A massive tower was already built at the end of the 13th century, and a second, taller south tower followed in the early 14th century — a tower that survives to this day and is regarded as the tallest church tower in all of Silesia.

The interior tells a different story. In 1689, a major fire swept through Opava, and the burning roof collapsed, destroying the medieval Gothic vaulting inside. Reconstruction was carried out by the builders G. Hausrucker and J. Zeller, who replaced the lost Gothic vaults with new Baroque ones — the vaults visitors see today, sitting in sharp contrast with the raw brick Gothic shell outside.

A new chapter opened in 1996, when the Diocese of Ostrava-Opava was established. The church was elevated to the rank of co-cathedral, becoming the diocese's second episcopal church alongside the cathedral in Ostrava. A year earlier, in 1995, the building had already been entered into the register of Czech national cultural monuments.

What should visitors look out for?

The co-cathedral is a three-nave hall church built of exposed, unplastered brick — one of the largest and most striking examples of Silesian brick Gothic anywhere in the Czech Republic. From the outside it reads as a stark, red-brick mass with Gothic detailing and two towers of unequal height, the taller southern one rising above Horní náměstí and the whole old town. Step inside, though, and the picture changes completely: the Gothic shell conceals Baroque vaulting built after the 1689 fire, making the co-cathedral an unusually clear example of two architectural eras layered within a single building.

When is the best time to visit?

As an active parish and episcopal church, the co-cathedral welcomes visitors and worshippers throughout the year. Quiet weekdays outside Mass times are the best moments to take in the interior at leisure. Since the building remains a working church, visitors should plan around the Mass schedule and keep a respectful, quiet presence around those praying.

How do you get there?

The church stands right in the historic core of Opava, on Rybí trh square, only a few minutes' walk from Horní náměstí and the rest of the old town's landmarks. No special transport is needed — once in Opava's old town, the tall south tower is visible from a distance and makes an easy landmark to walk toward.

Frequently asked questions

What does "co-cathedral" mean? A co-cathedral is a church that serves as a second episcopal seat within a diocese, alongside the main cathedral. In the Diocese of Ostrava-Opava, founded in 1996, that second seat is the church in Opava.

How old is the building? Its roots go back to the early 13th century and the Teutonic Knights' presence in Opava from 1204, though the church took on much of its present Gothic form in the 14th century.

Why does the interior look so different from the exterior? Because the original Gothic vaults were destroyed in the 1689 fire that struck Opava. During the rebuild, Baroque vaulting replaced the lost Gothic ceilings, so a Gothic brick exterior now encloses a Baroque interior.

Is the church a protected landmark? Yes — it has been listed as a Czech national cultural monument since 1995.