Forget Lake Como, Switzerland’s highest navigable lake surrounded by breathtaking mountains is a rare alpine treasure

Lake Seealp sits at 1,143 metres above sea level, in the Alpstein massif. It is the highest navigable lake in Switzerland, surrounded by breathtaking mountain scenery.

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Hidden in the heart of Appenzell

Lake Seealp (or Seealpsee) lies in the canton of Appenzell Innerrhoden, at the heart of the Alpstein massif in Switzerland. Accessible on foot from the village of Wasserauen, it is one of the most cherished spots in this still-unspoilt region.

At 1,143 metres above sea level, this glacial lake shimmers with an emerald-green hue, reflecting the dramatic peaks of the Säntis and the Schäfler. It offers a striking backdrop for lovers of nature, hiking, and photography. Its relative remoteness—combined with the ease of access for walkers—makes it both intimate and spectacular, with each season revealing a new palette of natural contrasts.

A hike through alpine meadows and forests

Reaching Lake Seealp requires a bit of physical effort, but the reward at the top far exceeds expectations. The main trail starts at the Wasserauen train station, at around 870 metres in altitude, and climbs just over 270 metres—an ascent that takes a little under an hour on foot.

Along the way, hikers pass through lush meadows, skirt forested paths, and occasionally encounter flocks of Appenzell cows, their iconic bells echoing through the valley. The climb, moderately steep in places, is dotted with stunning viewpoints that gradually reveal the lake nestled in its alpine cradle. It is an immersive experience—where nature takes centre stage, far from the noise and pace of urban life.

A rare alpine treasure

What sets Lake Seealpsee apart from other mountain lakes is its navigability—a rare feature at such altitude. In summer, visitors can rent small rowing boats and glide silently across the still waters, surrounded by the echo of the mountains and the whisper of the wind.

Drifting across the lake is a near-meditative experience, with the surroundings inviting quiet contemplation. The clarity of the water, the purity of the mountain air, and the absence of engine noise all contribute to a blissful sense of isolation. Very few Swiss lakes at this altitude offer such an experience, making Seealpsee as unusual as it is enchanting.

A natural and cultural gem

Beyond its raw beauty, Seealpsee also represents a piece of eastern Switzerland’s living heritage. Alpine chalets dotted around the lake are still home to farmers who craft cheese using traditional, time-honoured methods. It is not uncommon to come across locals in traditional dress, especially during seasonal festivals or transhumance rituals.

The local wildlife—including marmots, chamois, and a variety of alpine birds—reinforces the sense of a fragile yet authentic ecosystem. Far removed from the polished image of major ski resorts, Lake Seealpsee remains a living testament to a mountain landscape that is both inhabited and respected, where every element seems to carry a story of its own.