The Solomon R. Guggenheim Museum, commonly known as the Guggenheim, is an internationally-renowned art museum in New York City and one of the most iconic architectural structures of the 20th century. Designed by renowned architect Frank Lloyd Wright, the museum's iconic conical white spiral is home to a vast collection of artwork by renowned artists such as Kandinsky, Picasso, Pollock, Monet, Van Gogh, Degas, and Mapplethorpe. The museum also hosts rotating exhibitions of modern and contemporary art in its famed Rotunda, as well as lectures by artists and critics, performances and film screenings, classes for teens and adults, and tours of the galleries led by museum educators. Founded in 1939 by New York mining magnate Solomon R. Guggenheim, the museum was originally called the Museum of Non-Objective Painting. It was officially renamed after the death of its founder in 1952, and opened to the public in 1959, six months after Wright's death. Following a three-year closure in the 90s for renovations, including the addition of an eight-story tower, the Guggenheim reopened in 1992. It was designated a National Historic Landmark in 2008, and was inscribed on the Unesco World Heritage List in 2019 for its 20th century architecture. Other notable branches include those in Bilbao and Venice, with a new museum in Abu Dhabi currently under development.