Ter Apel is the starting point for the Ruiten Aa, a stream that has been rippling through the green landscape of southeastern Groningen since time immemorial. The stream begins its meandering adventure near a medieval Crosier monastery in one of the oldest forests in Groningen. It continues its way through a landscape that feels intimate and romantic. Feelings that are fueled by a beautiful variety of fields, meadows, hedgerows, heather and forest. But also through ancient farms, hamlets and a fortified town, all of which convey their own historical atmosphere.