Wunderland Kalkar: The SNR-300 Nuclear Amusement Park
The SNR-300 fast breeder reactor in Kalkar cost 7 billion Deutsche Marks to build but never generated electricity. Today, the complex operates as Wunderland Kalkar, an amusement park featuring a swing ride built into the former cooling tower.
Located in the Lower Rhine region of Germany, a massive concrete cooling tower dominates the flat agricultural landscape. This structure was originally built to cool the SNR-300 fast breeder reactor. Today, its exterior is painted with a mountain mural, while a 58-meter vertical swing ride incorporates the former cooling tower. This is Wunderland Kalkar, an amusement park built across the site of a nuclear facility that never operated.
The 1972 Fast Breeder Project
Construction on the SNR-300 reactor began in 1972. The sodium-cooled fast breeder was developed as part of West Germany's nuclear energy program. The total construction cost reached approximately 7 billion Deutsche Marks over the next thirteen years. By the mid-1980s, construction of the facility was largely complete, including the reactor buildings and the large cooling tower.
Despite the completion of the physical infrastructure, the facility never received its nuclear fuel. The project faced years of political opposition, regulatory disputes, rising costs, and protests. The 1986 Chernobyl disaster further weakened political support for nuclear projects, and the SNR-300 was ultimately abandoned in 1991 without entering operation. The site then remained unused until its sale in 1995.
The 1995 Dutch Acquisition
In 1995, Dutch entrepreneur Hennie van der Most purchased the 55-hectare site. Contemporary accounts commonly report a purchase price of around 2.5 million Deutsche Marks. The company repurposed the surrounding infrastructure.
The central attraction is the cooling tower. The hollow concrete cylinder, originally designed to dissipate waste heat from the plant's cooling system, now contains a carousel that lifts riders above the tower's rim. The exterior concrete wall was subsequently converted into a multi-lane climbing wall. Other buildings across the former power-plant complex were repurposed for hotels, restaurants, and event spaces.
Planning Your Visit
Wunderland Kalkar is located in Kalkar, Germany, near the Dutch border. The park operates on an all-inclusive ticketing model, where the entrance fee covers access to the rides, as well as unlimited french fries, soft drinks, and soft-serve ice cream.
The park is generally open from April through October. Check the official calendar before visiting, as opening hours fluctuate during shoulder seasons. Most of the rides are tailored for children aged 3 to 12, though the cooling tower swing and the climbing wall remain accessible for adult visitors.
Frequently Asked Questions
Is it safe from radiation at Wunderland Kalkar?
Yes. The reactor never entered operation and nuclear fuel was never loaded, so the site was not contaminated through reactor operation.
Where is the park located?
Wunderland Kalkar is located in Kalkar, a town in the Lower Rhine region of North Rhine-Westphalia, Germany, very close to the Dutch border.
Are the rides suitable for adults?
Yes, although the park primarily targets families with children. Adults interested in unusual industrial sites may still enjoy the cooling-tower attractions and the history of the former nuclear complex.