Miercurea Ciuc is the capital of Harghita county in the eastern Carpathians, deep in the Székely heartland of Transylvania. The population is overwhelmingly Hungarian-speaking, and the town has a distinctly different feel from the rest of Romania — the signs are bilingual, the food leans towards Hungarian, and the cultural identity is fiercely Székely.
The town sits in a broad valley surrounded by forested mountains. The Mikó Castle, a seventeenth-century fortress in the centre, now houses the Székely Museum of Csík with collections on local history and ethnography. Miercurea Ciuc is best known in Romania as the home of Csíki Sör, one of the country's best craft breweries, and for its role in the annual Csíksomlyó Pentecost pilgrimage — one of the largest Catholic gatherings in Central Europe, held at the Șumuleu Ciuc shrine just outside town. The surrounding mountains offer good hiking and skiing in winter, with Harghita Băi a short drive away.