The border between Germany and Switzerland is largely formed by the river Rhine and the Bodensee, with several exceptions.
A part of Basel is north of the Rhine and Schaffhausen, on the northern bank of the Rhine, is Swiss as well.
Near Schaffhausen, along this border, is the German enclave Büsingen located inside Switzerland.
I have visitied multiple interesting sections of the German-Swiss border by now, including the enclave of Büsingen.
I will describe these sections from west to east, starting and finishing with the (wet) tripoints on both sides.

---

In 2013 I visited all the tripoints of Germany together with Ruud.
The tripoint CH-DE-FR is located in the middle of the Rhine, near Basel.

---

On our way from the Netherlands to Malta our first night is in Bad Säckingen.
When we leave the next morning, on May 10, 2024 we cross the historic bridge over the Rhine.
To my surprise there is a historic border stone from 1810 located on the bridge.
The border is a bit further in the middle of the Rhine nowadays.

---

I visited Büsingen on October 23, 2024. Büsingen is a German enclave within Switzerland.
A few years ago I was very close to Büsingen, but did not visit it. I assumed it was not a very interesting place. Now that I am more interested in special borders I wanted to visit Büsingen obviously. It turned out however I was right about the village not being very interesting ;-)
The most interesting things to see are the post office with both a German and Swiss postal code and this car with a Büs license plate and a CH sticker, not sure if this is legal.
Büsingen is within the Swiss toll area, which means prices are in CHF.
My Deutschlandticket was not valid on the Swiss bus between Schaffhausen and Büsingen but was valid on the German bus from Büsingen towards Singen, without stops in Switzerland.

The southern border of Büsingen is the Rhine, there is a land border with border markers numbering from east (1) to west (123). Border marker 1 is supposed to be in the middle of the Rhine, called Hattinger Stein or Nellenburger Stein.
It is a glacial erratic that can not be seen as it is 1,5 meters below water level.
This boulder can be found in historic writings since 1453. In 1672 the year was engraved in the stone during a period of extreme low water.
From the Rhine the first visible stone is marker 2, located on private property. After a short climb marker 3 will be reached, it marks the first significant angle in the border. Restaurant Waldheim is located between the markers 3 and 4. The border has been made visible on the ground. The terrace of the restaurant is located both in Germany and Switzerland. Marker 5 is in the middle of the road leading to the restaurant. Marker 6 is not a stone, but a plaque in the middle of the road. This is the main road following the Rhein and crossing Büsingen. We will see it again at the end of the border . From here the border follows the road. It is not a pleassant road to walk on. Cars pass on high speed. I walked through the forest and rejoined the road near marker 9, which has an interesting shape. In the fields I can spot marker 10, but I will not go there; instead I will follow the road towards the village now. I rejoin the border in the fields on the western border of Büsingen. From marker 115 I can spot marker 114 in a distance, but I did not go there. The next markers are on the side of the road. Marker 120 is on the corner of the Vögelingässchen and Höhenstraße. A bit further on the western side of the road is an interesting stone that does not appear to be part of the border markers. 121 is a low stone on the east side of the road. Marker 122 looks like a stone embeded in the street, in such a way that cars can (and will) drive over it. The border is in the middle of the street here. The last marker has number 123. It is on the west side of the road, close to someones garden. Aftwe this marker the border goes presumably in a straight line to the Rhein. There is no marker to be found there.

---

On May 28, 2017 I was walking from Schaffhausen to the east, along the Rhine, that forms the border here.
This is far before I started to photograph border markers, but I took a picture of this border stone anyway.

---

Near Konstanz, the Rhine doesn't actually form the border. Konstanz is German, and its center is located on the south bank of the Rhine. Between the Seerhein and Bodensee, the border between Germany and Switzerland runs overland for about 3 kilometers. I followed this border for a while during my visit in September 2025.

On September 5th, 2025, before leaving, I visited the westernmost border stones. The border stones are numbered from east to west, so I'm walking from highest to lowest here.
However, I didn't go higher than number 35; there's a sign indicating this is private property, which I dutifully respected. I expect there are at least two more higher-numbered stones.
The number of the next stone, number 34, is the first readable one. Swiss customs found me a bit suspicious and wanted to check me.
They were stationed here at the first border crossing from the west; On both sides of the customs post are border stones: numbers 33 and 32.
Now I made the mistake of walking on the German side, because from there you can't see the next border stones.
But it was also raining quite a bit, so I didn't really feel like looking for more border markers anymore.

---

The next border crossing (after the highway), is at a actively manned customs post. I didn't find any border stones here, but later I learned that there are iron plates in the wall on both sides and marker 21 is just in the back of the picture I made here.
The first border stone I found on September 4, 2025, is number 20. The border here is formed by a high fence.
Number 19 is also on a corner, in this fence. Border stone 18 is behind a house and seems inaccessible from this side at least. Stone 17 is also behind the houses, but it is visible from the street. Border stone 16 is at a border crossing that is no longer used for motorized traffic, which is also physically impossible.
While the floor has been painted green, the border doesn't feel too open here, although you can freely roam by foot or bike between the two countries.
At first I can't find marker 15, but on a closer look a manhole cover appears to have taken over the function of stone 15.
Later I learn there are also stones 16A, B and C and metal markers 14A and 14B on the walls. Stone 14 is behind the customs office. I'm missing stone 13, which is likely not far from stone 14. Stones 12 and 11 are also located at a disused border crossing. Stone 11 has a unique shape. Stone 10 is on Wiesenstrasse, stones 9 and 8 are close together at the corner of Wiesenstrasse and Freiestrasse. Stones 7 and 6 are on either side of a railway crossing, which is often closed. There is a railway crossing on both sides of the border, as can be clearly seen from border stone 5. Border stone 4 is nearby, and directly opposite is border stone 3. This is another border crossing for non-motorized traffic.
Boundary stone 2 is behind the building, near a children's playground. I thought boundary stone 1 was supposed to be on Bodensee, but it turns out to be much closer to stone 2. I miss it. I do find this unnumbered stone, which seems to be right on the border, and a plaque with the number 1A in the ground, near the shore of Bodensee.

---

The tripoint Germany - Switzerland - Austria is located in the middle of the Bodensee.
We visited this tripoint in our 2013 Germany tour.
Ruud is watching the tripoint from somwhere on the German side.