Gelmerbahn probably wouldn't have been on my radar if it wasn't for my kids finding it on TikTok but I'm so glad they found it. We based most of our Switzerland stay in Brienz and this was about 45 minute drive for us. The mountain roads leading up to the area are gorgeous. I guess because this is huge on TikTok you need to pre-book your tickets. Luckily I was able to book for a day out. I chose one of the earlier time slots so we could also spend some time at the top.
Roundtrip price for adults is 36CHF and for kids 18CHF so this is not the cheapest activity but if you plan to spend some time at the top hiking and enjoying the scenery it's definitely worth it. Make sure to bring snacks or lunch because there is nothing at the top. If you plan to hike wear good shoes the paths are rocky. If you just want to walk around the lake and dam sneakers are fine. There is a bathroom and porta-potty at the top.
Make sure to show up for your time slot early. You will need to park at the lot (free) and walk about 5 minutes uphill. If you miss your time slot you're walking. We found the staff friendly, helpful and spoke multiple languages. read more