The collection of the New Gallery comprises a regionally and internationally outstanding art collection with paintings, sculptures, and new media from the 19th to the 21st century. A particular focus is on the documenta artworks, which the museum has been acquiring since 1982 with the support of the city of Kassel and the state of Hesse.

Highlights include groundbreaking works of 19th-century painting such as "The Loving Couple in the Forest" by Carl Spitzweg. This collection primarily showcases the development of the new landscape painting. Please provide the text that you would like me to translate into English. from the heroic landscape of the early 19th century through Romanticism to Realism and the first impressionistic influences.

From the 20th century, the collection includes important holdings of German Impressionism. This includes numerous works by the artist Lovis Corinth, with his main work "Walchensee". Another focus of the collection is the painting and sculpture of Classical Modernism. The art of the post-war period and contemporary art is represented with works by Sigmar Polke, Andy Warhol, and Gerhard Richter.

On the occasion of the opening of the house in 1976, Joseph Beuys personally set up a room in which he, among other things, installed his work "The Pack (Das Rudel)".

Among the most important acquisitions from the documenta exhibitions are the walk-in installation "Isola" by Mario Merz, Doris Salcedo's "THOU-LESS", a painting by Miriam Cahn, and a part of Ai Weiwei's art project "Fairytale".Sure, please provide me with the text you would like me to translate into English.I'm here to help. Just provide me with the text you'd like me to translate into English.