Nyker is a small town northeast of the island's capital Rønne. The round church of Nyker with two floors is the smallest of the four round churches on Bornholm. It was built at the end of the 13th century, making it the youngest rotunda church. There is a beautiful runestone in the vestibule of the church. The central pillar of the church is on the first floor. It is decorated with frescoes from the time the church was built.
The church has a gray stone baptismal font, a richly decorated wooden pulpit, an altar, a golden ceiling chandelier and three colorful mosaic windows. After the church lost its defensive character, the windows in the church were enlarged.
