Køge's brick Sankt Nicolai Kirke (sanktnicolaikolding.dk), named for the patron saint of sailors, has a 14th-century 43m church tower you can climb in summertime. In 1450 a little window-like brick projection (called Lygten) was added to the tower's upper eastern end to hang a burning lantern for guiding ships into harbor. It was from the top of this tower that Christian IV kept watch on his naval fleet as it successfully defended the town from Swedish invaders during the Battle of Køge Bay.
Within the church other notable features include the ornately gilded 17th-century altar and multistage pulpit, plus the crest-emblazoned wooden gallery.
