Peiting is well-placed for exploring the broader Pfaffenwinkel and Voralpenland. The most obvious destination is Schongau (4km north), which has one of the best-preserved medieval town fortifications in Bavaria — a largely intact circuit of walls with towers dating to the 14th and 15th centuries. The old town sits on a bluff above the Lech and rewards a half-day on foot.
The Wieskirche at Steingaden, about 15km south-west, is a UNESCO World Heritage Site and one of the finest rococo interiors in Germany. The pilgrimage church of the "Scourged Saviour" was built between 1745 and 1754 by Dominikus Zimmermann and is extraordinary — the whitewashed exterior gives no hint of the exuberant painted ceiling and gilded stucco within. Go early in the morning to avoid coach tours.
Hoher Peißenberg (988m) rises about 10km east of Peiting and offers a 360-degree panorama that on clear days extends from the Zugspitze to the Berchtesgaden Alps. There is a meteorological observatory on the summit that has been operating continuously since 1781, making it one of the world's oldest mountain weather stations. A small pilgrimage church sits at the top. The ascent by car takes about 20 minutes; walking trails from the valley take 2–3 hours.
Ammersee and Starnberger See, the two large Alpenvorland lakes north-west and north-east of Peiting respectively, are reachable in about 40–50 minutes by car. Both have swimming beaches, boat hire and lakeside walking. Starnberger See is the more fashionable of the two; Ammersee quieter and less crowded in summer.