In 1507, his successor Balthasar von Blumeneck sold Gundelfingen again, this time to Margrave Christopher I of Baden.

The very first oak with that purpose was planted in Wittenberg on the same spot where Luther had publicly burned the papal bull.

This pond is located in a small park in the middle of the residential area Am See (at the lake) to the east of the train station.

Further to the northeast there is a low saddle called "Leheneck", 1060 ft above sea level, which has views towards the north (Heuweiler) and the south (Wildtal).

The aforementioned parking lot is also a trailhead for walks to the Reutebacher Höfe and other spots on the Roßkopf such as the Roßkopfturm.

From Zähringen castle you walk through the mountain forest to a spot called "Rottecksruhe" (Rotteck's rest), 1935 ft above sea level.

Just north of the summit of this mountain and next to a small hut, the "Roßkopfturm", a 115 ft high lattice tower is standing that was built in 1889 and offers a panoramic view of Freiburg, the surrounding mountains and the Upper Rhine Valley with the Tuniberg and the Kaiserstuhl, and, on some days, when the visibility is particularly good, you can even see the Vosges on the opposite side of the Upper Rhine Valley beyond the Alsatian Plain in France.

Walking towards the east you will reach the "Martinsfelsen" (Martin's rock), 2250 ft above sea level, offering a good view of the northern Breisgau.

There is even a Russian orthodox chapel in an isolated location in the Roßwinkel which is cut off by Bundesstraße (federal highway) B 3 which is bypassing Gundelfingen in the West.

The region has a well-developed road network: Bundesstraße (federal highway) B 3 (from Buxtehude in the Hamburg Metropolitan Region in Northern Germany to Weil am Rhein on the Swiss border) which once crossed Gundelfingen is now bypassing it so as to tackle traffic congestion.

Bundesstraße B 294 (from Freudenstadt in the Northern Black Forest to Freiburg) is also closely bypassing Gundelfingen and connecting it with Autobahn (motorway) A 5 (from three-leg motorway interchange Hattenbacher Dreieck near Bad Hersfeld in northeastern Hesse to Basel in Switzerland).

Gundelfingen is served by feeder buses to the tram network operated by Freiburger Verkehrs AG, OVS Schumacher, Rast Reisen and Binninger.

Buses to the hinterland are operated by SüdbadenBus, but practically all are bypassing Gundelfingen and you have to change in Freiburg.

In addition, bus line 201 from Freiburg to Vörstetten and further on to Reute and Nimburg (Teningen-Nimburg) which is operated by Binninger.

In the morning and in the afternoon, line 5 is driving to the station, which name is "Gundelfinger Straße" (Street of Gundelfingen), too.

In Gundelfingen there are two official carnival clubs: The first twinning arrangement was concluded in 1987 with the French town Meung-sur-Loire which has 6800 inhabitants and is located directly on the Loire approximately 19 miles from Orléans.

Ten years later, in 1997, followed the Polish town Bieruń (German Berun) with approximately 20,000 inhabitants, 12 miles south of Katowice in Upper Silesia.