The biggest Austrian lake, and Europe's westernmost steppe lake, is situated between the easternmost section of the Alps and the Seewinkel, which is the western portion of the Little Hungarian Plain (Kisalföld): the state border between Austria and Hungary runs through this region. The lake of Neusiedl is a border area also from a biological point of view: alpine, pannonian, asian, mediterranean and nordic features are all to be found here, creating a natural space which is unique in Europe, and which provides a habitat for an incredible number of animal and plant species.
The lake of Neusiedl and the other small saline lakes are a popular destination for birdwatchers, especially in autumn and spring. Over 300 bird species live within the Park boundaries, and from its observation structures it is possible to spot many of them.