A baby hippopotamus lies next to its mother on the first day it was presented to the public at the Zoo Berlin zoo on November 1, 2011 in Berlin, Germany. The baby hippo was born at the zoo on October 23. (Photo by Sean Gallup/Getty Images)

A member of the Eton public school O.T.C. (Officers Training Corps) practising shouting out orders during a training session, 20th January 1940. (Photo by Hulton Archive/Getty Images)

Johnson Cheung-shing Tsang is a Hong Kong sculptor specializing in ceramics, stainless steel sculpture and public artworks. Tsang’s works mostly employ realist sculptural techniques with a surrealist imagination, integrating the two elements, human beings and objects, into creative themes.

Last weekend, the National Building Museum in Washington, D.C., opened a 10,000 square-foot ball pit to the general public, and everyone cheered that, finally, someone made their childhood dreams come true.

A Shariah law official whips a woman who is convicted of prostitution during a public caning outside a mosque in Banda Aceh, Indonesia, Friday, April 20, 2018. Indonesia's deeply conservative Aceh province on Friday caned several unmarried couples for showing affection in public and two women for prostitution before an enthusiastic audience of hundreds. The canings were possibly the last to be carried out before large crowds in Aceh after the province's governor announced earlier this month that the punishments would be moved indoors. (Photo by Heri Juanda/AP Photo)

Undated UK Ministry of Defence handout photo of an RAF Tornado GR4 which has been painted in Gulf War “desert pink” paint scheme to honour the aircraft type's almost continuous operational service since the Royal Air Force helped liberate Kuwait from Saddam Hussein's forces, taken by SAC Rose Buchanan, which has been shortlisted for the general public to pick their favourite RAF Image of the Year. (Photo by SAC Rose Buchanan/MoD Crown Copyright/PA Wire)

A woman looks towards part of an artwork called “Lichen! Libido! (London!) Chastity!” by Anthea Hamilton, one of the four artists shortlisted for the Turner Prize 2016, as it is displayed at the Tate Britain gallery in London, Monday, September 26, 2016. The Turner Prize aims to promote public debate around new developments in contemporary British art. (Photo by Kirsty Wigglesworth/AP Photo)