Braunschweiger Oker Podcast Tour: Self-Guided Urban Walk

A medieval defensive moat transformed into the city's vital ecological reserve and recreation hub.

This self-guided podcast tour traces 6.3 km along the Braunschweiger Oker, stopping at seven sites that reveal how urban water management and nature coexist in Hannover. You follow app-based navigation and listen to expert commentary and local voices as you move through the landscape, from a modern fish ladder and historic botanical garden to a lively beach club and massive flood defenses. The tour takes roughly two and a half hours and suits anyone curious about urbanism, infrastructure and how cities adapt to ecological needs.

Step-by-step itinerary

Explore Brunswick's Oker river sites

• Start at historic weir with fish ladder
• Visit green space from old defensive moat
• Explore historical botanical garden
• See historic wall converted to living park
• Discover heart of the 'Blue Lung' park
• Relax at lively beach club on riverbank
• End at massive weir with flood defenses

The experience

What makes this walk different is the story it tells: the Oker was once a military boundary, then became a neglected urban ditch, and now functions as the city's "Blue Lung". A working ecological system that also serves as a place where people gather, swim and relax. The podcast guides you through that shift by stopping at specific moments where the tension between human planning and natural forces shows itself most clearly. You start at a weir fitted with a modern fish ladder designed to let salmon move upstream, then move through a quiet green space that occupies the old moat line, a botanical garden using the river's microclimate to study urban biodiversity, and a historic wall converted into a living park where people come to sit and think.

The app handles navigation between stops and lets you ask questions about what you're seeing: history, ecology, the infrastructure itself. The audio commentary comes from experts and locals who know the river, not a generic script, so the details feel grounded in how Hannover actually works. Midway through, you reach the sprawling heart of the "Blue Lung," a 19th-century landscape design that still delivers massive ecological benefits. Later, a lively beach club on the riverbank shows the modern side: people wanting a vacation feeling without leaving the city. The tour ends at a massive weir that confronts you with the heavy machinery of flood management and the ecological challenges that machinery creates.

You walk at your own pace and choose when to stop and listen. The route is 6.3 km over roughly two and a half hours, but you can stretch it or compress it depending on how long you linger at each station. The app works in English or German, and the tour is suitable for all fitness levels. Service animals are welcome, and public transport stops are nearby if you need to break the walk into segments.

What’s included

• Podcast-style audio guide featuring experts and locals speaking in English or German.
• interactive app-based navigation between the seven stops.
• verified historical and ecological facts woven into the narrative.
• point-to-point directions so you don't need a separate map.

Before you book

Days and timesEvery day

AgesAdult (13 and older) · Under 13: can't be booked

Audio guideEnglish and German

Meeting point and pickupNo hotel pickup: you go to the meeting point. Ends at a different place from where it starts.

Cancellation and refundsFree cancellation up to 24 h before the start. After that, no refund.

Prices and times updated 6 days ago

Good to know

Low physical effortPets welcomePublic transport nearby

Operated by Red Thread

Is this one for you?This is a self-guided walk, so you move at your own pace and stop as long as you want at each station: ideal if you prefer to explore without a group or a fixed schedule. The app does the talking and navigating, which suits anyone who wants expert context without the pressure of keeping up with a guide or a group.

Top questions

What exactly is the "Blue Lung" and why does the tour spend time there?

The "Blue Lung" is the sprawling central section of the Oker park system, designed in the 19th century as a democratic landscape open to the public. It delivers massive ecological benefits to the city (filtering water, providing habitat, cooling the urban heat), while also serving as a place where locals swim, picnic and relax. The tour shows how a single stretch of water can do both jobs at once.

Do I need to download anything before I start, or does the app work on the spot?

The app handles navigation and audio delivery, so you'll want to have it ready before you begin. It works in English and German and guides you point-to-point between the seven stops, so you don't need to navigate by map.

How does the fish ladder at the start of the tour work?

The weir at the beginning has a modern fish ladder that allows salmon and other fish to swim upstream past the barrier. It's a concrete example of how Hannover balances urban water management (the weir controls flooding and water flow) with ecological restoration, letting fish populations move naturally through the river system.

Is this tour really suitable for someone with no interest in infrastructure or ecology?

The tour is built for people curious about urbanism and how cities adapt, but the story it tells is also about how a place changes over centuries and what people do with the spaces they live in. If you're interested in how Hannover actually works and why certain parts of the city matter to locals, the tour will hold your attention.

Can I do this walk in winter, or is it only a summer thing?

The tour runs year-round and the route is accessible in all seasons. Winter changes how the landscape looks and feels, but the sites themselves (the weir, the botanical garden, the park) are open and walkable whenever you want to go.