Amerika is a large breeding pond with a small island, located not far from Františkovy Lázně. The pond is a part of an extensive pond system spreading across the Amerika forest park. The island is the nesting area and a resting point during migration of a great variety of water birds, including many species classified as critically endangered in Europe. In addition, the whole locality is a natural biotope. The island along with a larger part of the pond has been, therefore, declared a nature reserve in 1990, covering an area of approximately 60 hectares.
The nature reserve is home to a stabilized colony of the black-headed gull (Larus ridibundus) in the district of Cheb. Rare and disappearing species include the black-necked grebe (Podiceps nigricollis), common teal (Anas crecca) and the northern shoveler (Anas clypeata). Newly sighted species feature the Eurasian penduline tit (Remiz pendulinus) and the bluethroat (Luscinia svecica cyanecula). An amazing phenomenon are large populations of certain amphibians, namely the green frog (Rana klepton esculenta) and common tree frog (Hyla arborea).
Unfortunately, the giant hogweed (Heracleum mantegazzianum) is uncontrollably spreading in the northwest part of the reserve and it is becoming a risk for the existing vegetation.
The whole area with a network of well-maintained forest paths and resting areas serves as a place of relaxation for patients and visitors coming to Františkovy Lázně. The pond has a beach and boat rental and a romantic restaurant for excursionists was built on its shore in the style of framed houses typical for Cheb in 1898. The relaxing atmosphere is augmented by a small Zoo.