While the majority of palaces in Europe were built as a dwelling of aristocrats, Fridericianum was originally built as an art museum open to all. By the ХХ century, it contained an impressive collection of bronze and marble copies of statues of ancient times, vases, weapons, books, collection of coins, clocks and weapons. But before the World War I all the exhibits, except the library, were transferred to other museums in the country, and after World War II books were transferred to the University.
Today, art exhibitions are held in Fridericianum, and every five years it hosts the most important exhibition of contemporary art, Documenta. The oak, standing in front of the museum, is also an art exhibit. This is part of a large-scale campaign "7000 Oaks", initiated by the Post-Modernist Joseph Beuys. The artist intended to plant an oak tree in every town on the way from Kassel to Russia. =hps>weapons, books, collection of coins, clocks and weapons. But before the World War I all the exhibits, except the library, were transferred to other museums in the country, and after World War II books were transferred to the University.