It was built in the early 16th century and it forms the architectural heart of B. Štiavnica. Its shape had been determined mainly by the Town Hall and the Church of St. Catherine. It is lined by splendid houses that had been owned by rich burghers and mining entrepreneurs. In the middle of the square the eye of each visitor is caught by the stately Holy Trinity Column. It was built out of gratitude for the end of the plague which had troubled the town from 1710 to 1711. It used to be very simple - its current form is of later origin. It is the work of the famous sculptor Dionýz Stanetti. The structure is embellished by figures of seven saints - protectors of the town and patron - saints of miners.