The eco-museum is different from the traditional museums we know. It presents the connections between all living organisms on the territory of Bulgaria – plants, animals and man. In each theme in the museum there will be human presence, says Ventseslav Petkov, curator in “Nature” section at the Regional History Museum in Ruse. “People think that ecology is connected only with pollution, but it is also a science dealing with the relationship between living organisms in nature. More than 250,000 years ago man intervened in the ecosystem for the first time – then it was simpler, but now this intervention is in dangerous amounts”. The museum will have four levels and it will present scenes and stories from the life of plants, animals and humans using the most modern methods. On the underground level can be visited the largest freshwater aquarium for wild fish in Bulgaria. The capacity is 65 tons. It is divided into seven pools. The visitors will be able to see fish from the Danube and other rivers. On the next level in several rooms the visitors will be able to see interesting dioramas. The diorama represents a piece of nature that is transferred into the museum. In this case it will represent animals, earth, leaves, which will take the visitors into a journey straight into the forest, without the feeling that they are behind the windows of a museum.