Museums all over the country are celebrating today’s International Museum Day – this year’s theme being «Museums and Young People» – with numerous activities. First up is Thessaloniki’s Museum of Byzantine Culture (2 Stratou Avenue, tel 2310.868.570), which opens its conservation workshops (of icons, ceramics, mosaics and more) and warehouses to the public for the first time: guided tours are offered to groups of 10 people every hour, until 2 p.m. A bookbinding workshop will take place from noon to 2 p.m. and open-air conservation workshops of marble, paper, ceramics and metal will be set up in the atrium in the afternoon. Jazz band Bossanovex will round off the events with a show at 9 p.m. Admission to the museum is free. Thessaloniki is also preparing for a big art party in the evening at the Port Gallery, where the State Museum of Contemporary Art, the Photography Museum, the Center of Contemporary Art and the Film Museum have planned a rock and blues concert with Nick and the Backbone, DJ sets by Vassilis Stergiou and screenings from museums around the world. In the daytime, children and school students can create their own works 10 a.m. to noon with the help of artists Eleni Theofylaktou, Stavros Panayiotakis and Zefi Athanassopoulou at the State Museum of Contemporary Art. Admission to both the museum and the Center of Contemporary Art is free and their editions are available with a 50 percent discount. In Athens, the Benaki Museum has activities scheduled at its New Wing (138 Pireos & Andronikou, tel 210.345.3111-3). Children and young people, joined by their teachers, families and friends, can attend guided tours of the retrospective exhibition of Yiannis Gaitis, educational activities, theater games and more, from 10 a.m. to 6 p.m. All books at the museum shop will be available at a 50 percent discount and posters at a 10 percent discount. Admission is also free. The Frissiras Museum (3 & 7 Monis Asteriou, Plaka, tel 210.323.4678) will have free admission until 5 p.m.; tomorrow, singer Angelos Papadimitriou and violinist Dimitris Semsis will give a concert of works by Bach, Yiannidis, Kalantzopoulos and others at 8.30 p.m., while on Saturday the museum will remain open until 10 p.m. Guided tours and various family activities also take place at the Ilias Lalaounis Jewelry Museum (12 Kallisperi, Acropolis, tel 210.922.1044), from 9 a.m. to 4 p.m.; admission to the museum is also free.