Třeboňsko nature reserve spans an area of 700 km2 in the far south of Bohemia. Lying east of the hilly terrain of the Šumava region, the area is notable for its remarkably flat landscape – and is the only vast non-hilly environment of its kind in the Czech Republic to receive such special protection as a so-called CHKO (or landscape park). Not only that, but the Třeboň basin is also a UNESCO biosphere reserve.
