The Reformed Church of Greifensee

The Reformed Church in Greifensee, also known as the St. Gallus Chapel, is a Gothic small town church with the unusual quadrant floor plan and is a listed building.
The fortified church, erected in 1344, was given its ground plan due to its inclusion in the city wall. The facade is dominated by a pointed turret with a tower clock. The interior features a single central pillar that unfolds into a star vault with ornate keystones. The wooden gallery dates from 1638, the baptismal font from 1603 and the rococo-style pulpit from 1780. Bible verses are painted on the inner walls.
If you have time, you can also listen to the history of the church, this takes 15 minutes.

Simply beautiful here... Castle on Lake Greifensee.