Church with the Moon

Romanian Orthodox church with a working lunar mechanism on its tower

Address Piața Unirii 2, Oradea

The Biserica cu Lună is the church that gives Union Square its peculiar landmark. Built between 1784 and 1790 in a blend of late Baroque and neoclassical styles, it served the city's Romanian Orthodox community at a time when Oradea was still firmly under Habsburg control. The interior is restrained for the period — gilded iconostasis, painted vault, a few large icons in the Romanian tradition — but the real attraction is on the outside.

The mechanism that powers the rotating moon globe sits inside the tower and has been restored several times without ever being replaced; it still runs on the original gearing. If you stand in the square in the late afternoon you can occasionally hear the mechanism turning over.

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The black sphere on the tower is a working clock of the moon. A six-metre wooden globe, half black and half gilded, rotates once every 28 days to show the lunar phase to anyone in the square — installed in 1793 by a local clockmaker named Georg Rueppe, and still keeping time more than two centuries later.

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