area of Berlin, Germany, on the Spree River. Before World War II it was Berlin's diplomatic quarter and the site of the War Ministry. It includes the famous 630-acre (255-hectare) Tiergarten Park, a deer preserve until the 18th century. The park was destroyed in World War II, but it has been replanted; its “English garden” was donated by the British. The Berlin Zoological Garden and Aquarium, in the southwest corner of the park, has also been restored and is again among the finest in Europe. The park is bisected by the Strasse des 17. Juni, commemorating the killing of protesting East German workers by Soviet tanks on June 17, 1953. Several cultural institutions have been built since World War II, including the Congress Hall, the Philharmonic Hall, the New National Gallery of modern art, and the State Library. The relocation of the federal capital to Berlin in the 1990s transformed Tiergarten's eastern part, a once-neglected border area between East and West Berlin, into a government, commercial, and transportation centre.