the Hayward Gallery in London put Takis' artworks on show. – Takis exposes his "solar energy sculpture" in Delphi. 2001: The European Parliament awards the "Research Center for the Art and the Sciences" an Honorary Plaque for its contribution to the field of renewable energy sources. – Takis donates three signals for the permanent collection of Centre Pompidou in Paris. The signals are placed in the terrace of the building in the 5th floor. Four years later, the picture of the three artworks is used for Centre Pompidou's Christmas card. – The Galerie Xippas exhibits Takis's artworks within the framework of manifestations for the Art Athina 2001 project. 2003: Takis participates in the exhibition Music Mirrors – History Conscience commissioned by the Company for the Creation of a New Building for the Greek Lyric Stage and Academy – "Maria Kallas". He offers a "musical" as a symbolic gesture for the New Greek Opera. – Takis's Ligne paralléle vibrative (1972) and Colonne magnétique (2003) are presented at Xippas gallery in Athens. – Exhibition at the European Cultural Center of Delphi: Takis participates with the Dedication to Apollo (study 1). 2004: The Musical Spheres are displayed in the Atomium's exposition en equilibre et en movement. – Takis new work the Music of Spheres: Musical Space 1 is shown in Larissa Contemporary Art Center in Greece. – Magnetic Walls, Aeolian Signals, Antigravity Spheres, and Musical Spheres are exhibited in one art show in Sicily (Galleria Credito Siciliano) and Milan (Galleria Gruppo). – The Olympic Games in Athens inspires Takis to exhibit his Olympic Spirals and Aeolian Signals in the National Glyptotheque as well as in the exhibition Athens by Art organized by the Athenian municipality. Takis's poster inspired by the Athens 2004 Games and commissioned by the Musée d'art contemporain du Val-de-Marne. – He puts out of use four of his Musicals exhibited in Athens by the Bonham's auction house. He arranges that these are not sold by auction in London. 2005: Solar Magnetic Fields exhibition at Stavros Mihalarias Art Center in Athens. 2015: "The Fourth Dimension" exhibition at The Menil Collection, Houston, TX – "Takis, Magnetic Fields", Solo exhibition at Palais de Tokyo, Paris, France 2016: "The Signals and The Fourth Dimension" at Xippas Gallery, Geneva, Switzerland 2019: Takis retrospective at TATE Modern; the largest exhibition of Takis's work ever held in the UK, bringing together over 70 works. The exhibition, after