A round church is a church construction with a completely circular plan. There are many Nordic round churches in Sweden and Denmark (notably the island of Bornholm); round churches were popular in Scandinavia in the 11th and early 12th centuries. Round churches should not be confused with the older types of round-tower church constructions. Churches with many-sided polygonal shapes (such as the 16-sided example in Richmond, Vermont, USA) are likewise colloquially referred to as 'round'.