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The Mummelsee and its lakeside hotel seen from the forested slope of the Hornisgrinde
Your independent Mummelsee guide

The dark lake of the Black Forest, where the legends live

Hand-picked tours, honest local detail and everything you need to plan a day — or a weekend — at the most famous lake on the Black Forest High Road.

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Why visit the Mummelsee?

An Ice Age lake, a thousand metres up, with a story for every tree

The Mummelsee is the largest of the Black Forest’s glacial cirque lakes: a dark, fir-ringed bowl of water at 1,036 m, right on the Black Forest High Road between Baden-Baden and Freudenstadt. Legend says water sprites and a Lake King live beneath its surface.

Most visitors stop for an hour — a walk round the shore, a pedal boat, a slice of Black Forest cake. We think it deserves more: climb to the Hornisgrinde, explore the national park, see the Allerheiligen waterfalls, soak in Baden-Baden. This guide shows you how, with or without a car.

1,036 mabove sea level
800 mlake loop walk
40 minfrom Baden-Baden
A Black Forest gateau topped with cream and cherries
Traveller favourites

The best Mummelsee & Black Forest tours

Curated, top-rated experiences booked through GetYourGuide — from day trips that stop at the lake to walks in Baden-Baden. Prices are indicative starting points; tap any tour for live availability.

The Berghotel Mummelsee reflected in the dark water of the lake Small-group day trip from US$245
🕒 8 hours 📍 From Strasbourg ⭐ 4.8 (100)

From Strasbourg: Black Forest and Baden-Baden Day Trip

The best-reviewed way to reach the Mummelsee without a car. An English-speaking guide takes a small group across the Rhine to Baden-Baden, then climbs the Schwarzwaldhochstraße with photo stops before a proper break at the lake for lunch, cake and a walk along the shore.

  • Guided stroll through Baden-Baden and the Lichtentaler Allee
  • Viewpoints over the Rhine valley on the Black Forest High Road
  • Free time and lunch at the Mummelsee
Pedal boats moored at the wooden jetty on the Mummelsee Private day trip from US$512 per group
🕒 7.5 hours 📍 From Strasbourg

From Strasbourg: Black Forest Day Trip with Lake Mummelsee

Your own vehicle for up to four people and a relaxed pace: Baden-Baden in the morning, the Black Forest High Road at midday, lunch and Black Forest cake at the Mummelsee, then down the Baden wine route to the flower-hung village of Sasbachwalden. An audio guide in English, French or Spanish fills in the stories.

  • Private car or van with pickup in Strasbourg
  • Baden-Baden, the High Road and a long stop at the Mummelsee
  • Wine-village finale in half-timbered Sasbachwalden
The world’s largest cuckoo clock, a Black Forest house with a giant clock face Small-group day trip from US$141
🕒 9 hours 📍 From Strasbourg ⭐ 4.8 (138)

From Strasbourg: Black Forest Day Trip to Freiburg, Titisee & Triberg

The classic southern Black Forest loop in a single, well-paced day. It does not visit the Mummelsee, but it is the best way to add the region’s other icons — Titisee, the Triberg waterfalls and the cuckoo-clock makers — to a trip based in Strasbourg or the Rhine valley.

  • Old-town Freiburg with its minster and Bächle channels
  • Time on the shore of Lake Titisee
  • Triberg — waterfalls and cuckoo-clock craft
View from the Hornisgrinde over forested Black Forest valleys to the Rhine plain Private tour from US$888 per group
🕒 6.5 hours 📍 From Baden-Baden ⭐ 4.9 (19)

The Best in Baden-Baden and Blackforest

A private, flexible day for up to six people starting in the spa town itself. The guide shapes the route around your interests — thermal baths, wine cellars, Black Forest food and the forest roads above Baden-Baden — which makes it the natural choice if you want someone else to handle the driving.

  • Casino, Kurhaus and Lichtentaler Allee with a private guide
  • Black Forest food and historic wineries
  • Forest scenery tailored to your group
The domed Friedrichsbad bathhouse in Baden-Baden Day trip from US$336
🕒 11 hours 📍 From Frankfurt ⭐ 4.4 (44)

Frankfurt: Baden-Baden, Black Forest & Strasbourg Guided Tour

Two countries in one long day from Frankfurt: the Belle Époque spa town of Baden-Baden, a taste of the northern Black Forest, then across the Rhine to Strasbourg. A good fit if Frankfurt is your only base and you want the region’s highlights in one go.

  • Baden-Baden’s spa quarter and Kurhaus
  • A scenic Black Forest stretch
  • Afternoon in Strasbourg’s old town
A vintage sports car on the Black Forest High Road at sunset Private tour from US$905
🕒 9.5–12 hours 📍 From Frankfurt ⭐ 5.0 (2)

Frankfurt to Black Forest, Baden-Baden & Freiburg by Car

A private driver and a flexible itinerary through the Black Forest, Baden-Baden and Freiburg. Because the route is yours to shape, it is one of the few ways to include the Schwarzwaldhochstraße and a stop at the Mummelsee on a day out of Frankfurt — just ask when you book.

  • English-speaking driver, pickup anywhere in Frankfurt
  • Route tailored to you — ask for the High Road and the Mummelsee
  • Baden-Baden and Freiburg on the same day
Autumn sunlight on the tree-lined Lichtentaler Allee in Baden-Baden Walking tour from US$17
🕒 1.5 hours 📍 From Baden-Baden ⭐ 4.7 (228)

Best of Baden-Baden: Guided City Tour

Ninety minutes that explain why kings, empresses and Dostoevsky all ended up in Baden-Baden — and why the town is now part of the UNESCO “Great Spa Towns of Europe”. Inexpensive, well-reviewed and the perfect warm-up before you drive up to the Mummelsee.

  • Kurhaus, casino and the Trinkhalle
  • Roman bath remains and the thermal quarter
  • Stories of the royals and writers who came to take the waters
Snow-covered ski slope and fir forest at Seibelseckle on the Black Forest High Road Winter hike from US$216
🕒 1 day 📍 From Heidelberg / Baden-Baden

From Heidelberg or Baden-Baden: Snowshoe Hike in the Black Forest

In a good winter the ridge along the High Road lies under deep snow, and snowshoes are the best way into it. This guided small-group day takes care of the route and the logistics; you bring warm layers. Availability depends on the snow, so check dates early.

  • Snowshoe hiking in the high Black Forest
  • Pickup available from Heidelberg or Baden-Baden
  • Small group, winter season only
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Where to go

The lake and everything around it

The Mummelsee is the headline, but the Hornisgrinde, the High Road, the national park and Baden-Baden turn a photo stop into a proper trip.

The Mummelsee with the Berghotel and pedal boats on a sunny day The lake & the Hornisgrinde

Mummelsee

The legendary lake of the northern Black Forest

A dark, fir-ringed cirque lake at 1,036 m, scooped out by an Ice Age glacier below the Hornisgrinde. Walk the 800 m loop, hire a pedal boat, hear the legend of the water sprites and eat Black Forest cake on the terrace of the lakeside hotel.

Moorland and a stone tower on the Hornisgrinde summit plateau The lake & the Hornisgrinde

Hornisgrinde

The rooftop of the northern Black Forest

At about 1,164 m the Hornisgrinde is the highest summit in the northern Black Forest — a broad, windswept plateau of raised bog and dwarf pine right above the Mummelsee. A boardwalk crosses the moor, and on clear days the view runs across the Rhine plain to Strasbourg and the Vosges.

The B500 Black Forest High Road curving through fir forest in golden evening light Along the Black Forest High Road

Black Forest High Road (B500)

Germany’s classic ridge-top drive

The Schwarzwaldhochstraße runs about 60 km along the ridge from Baden-Baden to Freudenstadt, mostly between 800 and 1,000 m. It is one of Germany’s oldest scenic routes, and the Mummelsee sits halfway along it — the natural stop on any drive.

Morning mist drifting over fir-covered slopes in the Black Forest National Park Along the Black Forest High Road

Black Forest National Park

Wilderness in the making

Baden-Württemberg’s first national park, founded in 2014, covers around 10,000 hectares along the High Road on either side of the Mummelsee. Its visitor centre at Ruhestein, the wild Wildsee lake and the storm-forest trails show a forest being left to itself.

A stepped footpath beside the Allerheiligen waterfalls in a mossy gorge Along the Black Forest High Road

Allerheiligen Waterfalls & Abbey

Gothic ruins above a roaring gorge

Twenty-five minutes from the lake, the roofless Gothic church of a 12th-century Premonstratensian abbey stands in a green valley near Oppenau. Below it, the Lierbach stream tumbles through a narrow gorge in a chain of cascades reached by stairs and footbridges.

The classical colonnade of the Kurhaus in Baden-Baden in spring Day trips further afield

Baden-Baden

The Belle Époque spa town at the start of the High Road

Roman baths, a glittering casino, the Lichtentaler Allee and two great thermal spas: Baden-Baden is where the Black Forest High Road begins and where most Mummelsee visitors sleep. It is part of the UNESCO “Great Spa Towns of Europe” site.

Where to stay

Wake up by the water

The hotel on the shore, wellness hotels on the High Road, wine villages in the valley and grand hotels in Baden-Baden — compared, with live rates.

Berghotel Mummelsee

★★★
9.4 40

The only hotel on the shore itself: rebuilt in Black Forest style after a 2008 fire, with lake-view rooms, a restaurant, a terrace and a small spa. Stay here and you have the lake to yourself at dawn.

  • Directly on the Mummelsee
  • Restaurant, terrace and sauna
  • Hornisgrinde path starts at the door

Wellness- & Nationalpark Hotel Schliffkopf

★★★★

A four-star wellness hotel at over 1,000 m on the High Road, inside the national park area and about 15 minutes south of the lake — with indoor and outdoor pools and big views.

  • Indoor and outdoor pools, spa
  • Trailheads into the national park
  • About 15 minutes from the lake

Hotel Sonne-Eintracht Achern

★★★★

Achern’s traditional top address, with a full-service spa, an indoor pool and restaurants — a comfortable base between the Rhine valley, Strasbourg and the High Road.

  • Spa, sauna and indoor pool
  • Close to the A5 and Achern station
  • About 30 minutes to the lake
Plan your day at the lake

Make the Mummelsee the highlight of your Black Forest trip

The legendary lake sits halfway along the Black Forest High Road, 40 minutes from Baden-Baden and about an hour from Strasbourg. Compare day trips and guided tours and book in a couple of taps.

Good to know

Visiting the Mummelsee: your questions answered

Frequently asked questions

Is the Mummelsee worth visiting?

Yes — it is the most famous stop on the Black Forest High Road, easy to reach and genuinely atmospheric. On its own it is an hour; combined with the Hornisgrinde and the national park it makes a superb day. You can compare the best tours here.

How do I get to the Mummelsee?

It lies directly on the B500 Black Forest High Road, about 40–45 minutes by car from Baden-Baden and roughly an hour from Strasbourg. Regional buses run from Achern station and along the High Road, and several day trips from Strasbourg stop at the lake. See our getting here guide.

Is there an entrance fee?

No. The lake and the loop path are free. You pay only for parking, pedal-boat hire and food or souvenirs.

Can you swim in the Mummelsee?

It is not a bathing lake — the water is cold, acidic and protected. Visitors enjoy it from the shore path or from a pedal boat.

Where should I stay near the Mummelsee?

For the lake at sunrise, stay at the lakeside hotel or on the High Road. For choice and spas, stay in Baden-Baden; for value and easy access to Strasbourg, Achern and the wine villages. See where to stay.