Juffertoren is the name given to three church towers in Groningen. Two of these still exist. One in Schildwolde at the reformed church and one in Onstwedde as part of the Nicolaaskerk. The third in Holwierde near the Stefanuskerk collapsed in 1836 and was demolished in 1855. The towers are distinguished within Groningen by their brick spire.
The year 1289 is written on the tower with wrought iron numbers. However, it is claimed that this year is incorrect. If you reverse the numbers, the year will be 1829. The tower was restored in 1829-1830 and the numbers may have been incorrectly placed. The tower, built in the 13th century in a Romanesque-Gothic style, is mentioned as early as 1224. It was built with red-orange bricks (monastic caps) baked on site and a single layer of tuff. The octagonal spire is bricked on the inside.
The height of the tower is 47.6 m. The lower part measures 9×9 m. The thickness of the wall at the door is 2.3 m, at the second attic 1.75 m, at the bells 1.25 m and at the very top at the hatch another 85 cm. On top of the tower is a peak with a sphere and a horse as a weather vane. In the sphere are the documents with all data concerning the various restorations from 1766.