Madrid: Giandomenico Tiepolo (1727-1804). Diez retratos de fantasia. 

An exhibition about the brother of venetian painter Lorenzo Tiepolo, both sons of Giambattista Tiepolo, who moved to Madrid in 1762 to decorate the Real Palace. Coming from a private collection, the ten paintings portray two men and eight women, all dated around 1768. They don't represent real people, but certain characteristics typical of a certain social class.

Until March 4th

Fundación Juan March, Castelló, 77, Madrid, tel. (0034)  91 435 42 40

Profile portrait, 1768, Giandomenico Tiepolo

Paris: Néon, "Who’s afraid of red, yellow and blue?" 

It's the first major retrospective devoted to neon art, covering the 1950s to the present. Among the artists on show, Jean-Michel Alberola, Dan Flavin and other pioneers and new adepts to the neon medium.

From February 17th until March 20th

La Maison Rouge - Fondation Antoine de Galbert, 10 boulevard de la Bastille, 12e, Paris, tel. (0033) 01 40 01 08 81

Jean-Michel Alberola, 'Rien', 1994 Courtesy Galerie Templon, Paris 

New York: Weegee: Murder Is My Business

The exhibition draws upon the extensive Weegee Archive at ICP and includes environmental recreations of the apartment and the exhibitions of one of the most inventive figures in American photography. His graphically dramatic photographs of New York crimes and news events set the standard for what has become known as tabloid journalism.

Until September 2nd

International Center of Photography, 1133 Avenue of the Americas at 43rd Street, New York, tel. (001) 212.857.0000

Weegee, At an East Side Murder, 1943. © Weegee/International Center of Photography

Berlin: DB: Ryoji Ikeda

Running until 9^th April 2012, the Hamburger Bahnhof in Berlin welcomes the work of Japanese composer and visual artist, Ryoji Ikeda. His first solo exhibition in Germany sees Ikeda uniting the two symmetrical halls of Hamburger Bahnhof’s upper wings, referring to this symmetry in his piece ‘db’ (an abbreviation for decibel).

He has designed a white room and a black room, indicating a complementary relationship within the symmetry of the halls. The project is a composition in which time and space are shaped through the minimal use of sound, light and visual elements and is waiting for you to step inside. His investigations of sound, time and space on the basis of mathematical methods are recognised as cutting-edge and his works as intense experiences.

Berlin, Until 9 April 2012

Hamburg Bahnhof – Museum Fur Gegenwart,  Invalidenstraße 50-51, 10557, Berlin, tel. (0049) (0)30  3978 3411

Ryoji Ikeda data.tron, 2007

London: Il Mistero delle Cattedrali: Anselm Kiefer

The impressive vision of Kiefer has returned to London’s and arrived at the White Cube, where his new exhibition of 20 paintings and sculptures can be found. Comprised of familiar Kiefer traits; greys, dull rusts, metal forms and lead tablets. Themes of material and ideological entropy are evident throughout his new exhibition, with little in the way of light to allow thoughts of hope to shed through.

Until 26 February

White Cube, 144 – 152 Bermondsey Street, London, SE1 3TQ, tel. (0044) (0) 2079 305373

Merkaba (2011) Anselm Kiefer

Written by Elisa della Barba and Ben Taylor