French street artist OakOak produces creative works of art that use the characteristics of a location such as a light post, road sign and even a crack in the wall as inspiration but also as key elements in the work. (Photo by OakOak)

Singer Halsey arrives to the 2018 amfAR Gala New York at Cipriani Wall Street on February 7, 2018 in New York City, USA. (Photo by Splash News and Pictures)

Amateur astronomer Bill Snyder has been involved with astrophotography since 2007. Photo: The Cygnus Wall is in the southern area of NGC7000 also known as the North America Nebula. It is approximately 1800 light years from Earth, and is in the constellation Cygnus. The Wall is an energized shock front and contains the most concentrated star formations in the nebula. The size of the North America Nebula is about 4 full moons. (Photo and caption by Bill Snyder)

A colorful drawing is seen on a wall in Baghdad, Iraq on October 24, 2021. A group of volunteer painters tries to give hope and joy to the Iraqi residents by painting colorful murals on the walls of the houses and streets of the city, tired of violance. Seve-member group named “Butterfly Effect” is busy in drawing paintings to depict life in Baghdad and its cultural heritage on the buildings (Photo by Murtadha Al-Sudani/Anadolu Agency via Getty Images)

A photograph of Cuba's former President Fidel Castro decorates a wall inside a state-run market in Havana, March 8, 2016. (Photo by Alexandre Meneghini/Reuters)

A changing of the honor guard ceremony by the Tomb of the Unknown Soldier in Alexander Garden by the Kremlin Wall in Moscow, Russia on May 29, 2020. (Photo by Vladimir Gerdo/TASS)

A woman looks at the honour guard soldiers marching at the Tomb of the Unknown Soldier by the Kremlin wall, in downtown Moscow, on June 28, 2021. (Photo by Alexander Nemenov/AFP Photo)