, beans, cucumbers or potatoes.
Typical Berliner fares include Currywurst, invented in 1949, Eisbein, the Berliner known in Berlin though as a Pfannkuchen, and Leber Berliner Art (Berlin-style liver).
Turkish and Arab immigrant workers brought their culinary traditions to the city; for example, the d�ner kebab, falafel and lahmacun, which have become common fast-food staples. The modern fast-food version of the d�ner was invented in Berlin in 1971.
Zoologischer Garten Berlin, the older of two zoos in the city, was founded in 1844, and presents the most diverse range of species in the world. It was the home of the captive-born celebrity polar bear Knut, born in December 2006. The city's other zoo is Tierpark Friedrichsfelde, founded in 1955 on the grounds of Schloss Friedrichsfelde in the Borough of Lichtenberg.
Berlin's Botanischer Garten includes the Botanic Museum Berlin. With an area of 43 hectares (110 acres) and around 22,000 different plant species it is one of the largest and most diverse gardens in the world. Other gardens in the city include the Britzer Garten, site of the 1985 Bundesgartenschau, and the Erholungspark Marzahn, promoted under the name Gardens of the world.
The Tiergarten is Berlin's largest park located in Mitte and was designed by Peter Joseph Lenn�. In Kreuzberg the Viktoriapark provides a good viewing point over the southern part of inner city Berlin. Treptower Park beside the Spree in Treptow has a monument honoring the Soviet soldiers killed in the 1945 Battle of Berlin. The Volkspark in Friedrichshain, which opened in 1848, is the oldest park in the city. Its summit is man-made and covers a Second World War bunker and rubble from the ruins of the city; at its foot is Germany's main memorial to Polish soldiers.
Berlin is known for its numerous beach bars along the river Spree. Together with the countless caf�s, restaurants and green spaces in all districts, they create an important source of
