Vienna, a top European tourist destination, is also one of the world's most biologically active cities.
In the nooks and crannies of imperial palaces, ancient churches and historical gardens of Vienna, an amazing variety of wildlife thrives. Its vast green areas, including the Vienna Woods and the Danube wetlands, provide habitats for a stunning variety of wildlife. Wild boars, roe deer, foxes, and kestrels thrive in the city, while beavers and herons inhabit its streams and ponds. The Danube Island, a 21-kilometer stretch, doubles as a flood control and a public recreation area, hosting an ecosystem where rare European pond turtles and invasive red-eared terrapins coexist in reedy marshes.
