The largest Christmas lights decoration in an indoor venue consisted of 449,658 individual lights sources and was achieved by the Sun Plaza shopping centre (Romania) in Bucharest, Romania, on 25 November 2010.

The Sun Plaza is the largest shopping centre in Romania (as of today) with 209,000 m2 (0.08 square miles) of constructed area and 86 m2 (0.03 square miles) of retail area with a total of 109 shops. The lights installation was manufactured by the German company ‘First Christmas’. It took two weeks of work to install the Christmas lights in the shopping centre.