Cathedral of Kars

Place your hand on the outer wall. The stone is dark, almost black in places, and slightly rough, like cooled bread crust. This is basalt, the volcanic rock of the Armenian Highlands. In the thin, high air of Kars, it holds the cold of the morning long after the sun has climbed over the castle hill. Above you, a cone-shaped roof sits on a round drum, and the whole building feels compact and solid. It looks less like it was built and more like it was carved from one block.

You are standing beside the Church of the Holy Apostles, often called the Cathedral of Kars. Today many locals know it as the Kümbet Mosque. Kümbet is a Turkish word for a domed tomb or cupola, and you can see why the name stuck. Few buildings in this city have changed hands, faiths and names as many times as this one. Yet the shape you see has stayed almost the same for more than a thousand years.

To understand why it stands here, picture Kars in the tenth century. The town was then a royal seat of the Bagratids, an Armenian dynasty that ruled much of this plateau. Their king Abas the First chose Kars as his capital, and the church is traditionally credited to him. It was built in the 930s and 940s. A few decades later, the royal court moved east to Ani, the city of a thousand and one churches. Kars, however, kept this building.

Now look at the plan of the church from the ground. The walls bulge outward on four sides in rounded apses. An apse is a semicircular recess, the part of a church where the altar usually stands. Architects call this four-lobed design a tetraconch, and it was a favourite of medieval Armenian builders. The four lobes lean inward toward the centre. They carry the weight of the drum and the conical roof, so the structure needs no heavy buttresses.

Here is the detail that most visitors miss. Raise your eyes to the drum, the cylinder just below the roof. Around it runs a ring of tall, narrow arches. Inside them, you can make out carved human figures in low relief. There are twelve of them. They are usually understood as the twelve apostles, and they give the church its name. The figures are worn now. Wind, frost and centuries of sun have softened their faces, so you need patience and good light to read them.

The building's long life is a story of conquest. In the late sixteenth century, the Ottoman Empire took Kars, and the church was converted into a mosque. That was common practice across the region. Sacred buildings were rarely destroyed; they were reused. For roughly three centuries, the call to prayer replaced the chant of the liturgy, and the cone-shaped roof remained above the river.

Then the borders moved again. After the Russo-Turkish war of 1877 and 1878, Kars became part of the Russian Empire. The new rulers turned the building into a Russian Orthodox church. They added porches to the entrances and gave the interior new fittings. Some of those additions are still visible, and they explain why parts of the outer wall look different from the older stone. Look closely at the joints between old and new masonry.

Russian rule ended in the upheavals after the First World War, and Kars became part of the Republic of Turkey. In the decades that followed, the building had several roles. For a period it served as a warehouse, and later it became a museum. Since the 1990s it has functioned as a mosque once more. So this one structure has carried Armenian, Ottoman, Russian and Turkish chapters, each one layered onto the same tenth-century core.

If you step inside, remember that this is an active place of worship. Remove your shoes, dress modestly, and keep your voice low. The interior is simpler than the outside suggests. The four lobes open up around you, and the light falls from the high windows of the drum. Because of the rounded walls, sound behaves gently here. A cough or a whisper travels around the space, and then it fades into the stone.

Step back outside and look around the square. The church sits low in the old town, near the river that runs through the centre of Kars. Above it, on the ridge, rises the castle with its long walls. Close by, an old stone bridge crosses the water. You will also see Ottoman-era bathhouses and old stone houses in this quarter. Together they show how close the different centuries of Kars sit to one another.

The wider city has its own surprise. Walk a few streets south and you will find wide avenues lined with pale, elegant buildings from the Russian period. These streets follow a grid plan, and they feel more like a Baltic town than an Anatolian one. Kars sits at a high altitude, so the winters are long and snowy. In January this square can be white and silent. In July, the light is sharp and the evenings stay cool.

Why does a small church matter so much? Partly because it survived. Many medieval churches on this plateau are now ruins, or they exist only as foundations in the grass. This one still has its roof and its walls, and people still use it. For historians, it is a rare complete example of early Armenian architecture. For the people of Kars, it is simply part of the neighbourhood, a building their grandparents also walked past every day.

Before you leave, stand for a moment on the far side of the square. From here you can see the full outline: the four rounded lobes, the drum with its twelve arches, and the cone above it all. Behind it, the castle walls climb the hill. Listen to the river, to the traffic, to the voices of people crossing toward the bridge. The basalt under your hand earlier is the same stone the first builders cut, and it will still be here after you have walked away.