The Marian Column, also known as the Column of the Virgin Mary or the Plague Column, is a prominent architectural monument that graces the Lower Square (Dolní náměstí) in the city of Olomouc, Czech Republic. It is one of the two famous "plague columns" in the historical city center and was erected as a sign of gratitude for deliverance from a devastating plague epidemic.

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The construction of the column was completed in 1715, immediately after the end of the plague epidemic that raged in 1713–1715 and claimed the lives of over 3,000 residents of Olomouc. This monument became a symbol of faith and gratitude from the citizens for their salvation, as well as a reminder of the difficult times the city endured.
The Marian Column is not just a standalone monument but an integral part of the unique urban composition of Olomouc's historical center. Together with the famous Holy Trinity Column and six magnificent Baroque fountains, it gives the city its unique and memorable appearance. Such "plague columns" were widespread in Central Europe as an expression of gratitude for overcoming terrible epidemics, and the Marian Column in Olomouc is a striking example of this tradition, attracting attention with its history and skillful execution.