Works on show at the Documenta 14 art exhibition

Stacked on top of each other by a construction crane, these 20 huge sewage pipes were furnished by students, who turned them into the different rooms of a home - such as a bathroom, a bedroom, and even a dog house. The installation by Kurdish-Iraqi artist Hiwa K recalls the situation of refugees stranded at the Athens harbor, seeking shelter from the wind and bad weather wherever they can.

This is already a visitors' favorite: The Argentine conceptual artist Marta Minujín built a "Parthenon of Books," reproducing the size of the original monument in Athens. Forbidden books replace stone in the artwork. Many visitors spontaneously take pictures of this impressive installation.

Mexican artist Guillermo Galindi hung from the ceiling of the Documenta Hall remnants of boats used by refugees that were found at Greek coasts, in protest against the conditions that lead so many to risk their lives to cross over to Europe. Several works at this year's Documenta deal with this issue.

Smoking art at the Documenta: The project of Romanian-born artist Daniel Knorr features white smoke from the tower of the Fridericianum museum, the show's main exhibition venue in Kassel. His work "Expiration Movement" is a reference to smoke as a means of communication. More than one concerned citizen has already called the firefighters about it.

Geta Brasescu created the film "Automatism." In it, a man repeatedly slashes a black canvas. When a person suddenly appears in from of him, he just keeps stabbing with his knife. At the Documenta, films - along with installations and performances - are among the most popular art forms.

The Australian Gordon Hookey is a militant artist. Belonging to the Indigenous Waanyi people, he protests against colonial oppression and exploitation. To do so, he captures cultural references in the colorful monumental paintings of his series "Murriland!" on show at Kassel's Postamt, renamed Neue Neue Galerie by the art show.

Also on show at the Neue Neue Galerie, the monumental video installation "Atlas Fractured" by Theo Eshetu plays with the imagery of five traditional masks that were on a banner of the Ethnological Museum in Berlin. His work criticizes the geopolitical divisions of the world.

The first part of the world's most important art show was exceptionally held in Athens this year. Now, in Kassel, Greek art is also prominently featured. An exhibition organized by the Athens' National Museum of Contemporary Art is on show at the Fridericianum. Pictured here is the work "Hopscotch," by Vlassis Caniaris.

The obelisk by US artist Olu Oguibe has been erected on Königsplatz in Kassel. The over 16-meter-high (52-foot-high) artwork offers a statement in golden letters: "I was a stranger - and you took me in," in reference to Germany's immigrant-friendly policies.