The Koepelkerk (Domed Church) is the first church in the Netherlands specially built for Protestant worship and therefore the building became a model for many later Protestant churches. Construction began in 1597 and took ten years.

Prince Maurits van Oranje supported the construction of the church with 7000 florins, on condition that it would be built either ound or octagonal shape. The church was built without of chapels and side aisles; not the altar, but the pulpit had to be the centre point.

The Koepelkerk was heavily damaged in World War II )November 1944), during artillery shellings of the Allies. Willemstad has rebuilt and restored the church over the years. The church is now used by the PKN Reformed Church and is a national monument.