Leonhard Lapin (29 December 1947 – 28 February 2022), also known under the pseudonym Albert Trapeež, was an Estonian architect, artist, architecture historian, and poet.
A professor emeritus at Estonian Academy of Arts, Lapin was a forerunner of the avant-garde movement in Estonia, and he influenced Estonian art and architecture through his works and writings during the postwar 20th century. Lapin was active in functionalism, suprematism, technological futurism, and pop art. As an artist, he created graphics, paintings, performances, and happenings, and he published several articles, books, and poetry collections. Lapin influenced many students as a teacher; he regarded architecture and art mainly as a spiritual activity. He died on 28 February 2022, at the age of 74. After his death, he was cremated and his ashes were scattered over the river in Pirita.
1965: graduated from Räpina High School
1966–1971: studied architecture at the ERKI
1970: was introduced to Academic Oriental Association, where he learned about Buddhism
1971–1974: worked at Tallinn's Restoration Government as an architect under the Estonian art researcher Helmi Üprus and discovered Estonia's architectural heritage of 20th century
1977: member of the Estonian Artists Association
1982: member of the Estonian Association of Architects
1990: lecturer at the Estonian Academy of Arts
1995: professor at the Estonian Academy of Arts
1991–2003: head editor of the Estonian Association of Architects' publication Ehituskunst
1992–1998: lecturer at Helsinki's Maa Art School
1992: member of the Nordic–Baltic architectural triennial committee
1993–1996: member of the Maa Art School governing body
1994: guest professor at the Architecture Department at the Helsinki Institute of Technology
1995–1997 and 2003–2005: chairman of visual and applied arts foundation capital at the Cultural Endowment of Estonia
1997–2000: chairman of the committee "Space and Form 2000"
1997, 2002, and 2005: guest professor at the Estonian Music Academy