Couples take part in the “Love and Challenge Marathon” in Hanoi, Vietnam, 16 August 2015. Fifty couples, who are going to get married, participated in the event which is held the fifth time. This year, the winners of the marathon received a honeymoon trip to Malaysia. (Photo by Luong Thai Linh/EPA)

Revellers make the most of Friday night in Soho, central London after the hottest day of the year recorded in the capital this year, June 17, 2022. (Photo by Marcin Nowak/Alamy Live News)

Ingots of 99.99 percent pure silver are cast at the Krastsvetmet Krasnoyarsk non-ferrous metals plant in the Siberian city of Krasnoyarsk, Russia, June 5, 2015. Krastsvetmet is one of the world's largest players in the precious metals industry. REUTERS/Ilya Naymushin

A performer from the Imperatriz samba school takes part in the first night of Rio's Carnival at the Sambadrome in Rio de Janeiro on March 4, 2019. (Photo by Carl de Souza/AFP Photo)

Isabella Ferrari and Ben Ra pose for a photograph taken by Jacob deBlecourt at the City of Boston's Pride Kickoff event, celebrating the start of National LGBTQ+ Pride Month, in Boston, Massachusetts, U.S., June 1, 2022. (Photo by Brian Snyder/Reuters)

Cooperation is key to success. This motto was used by the Government of Denmark when they decided to create a project that bore the name of UN City. This compound was designed to house all nine Copenhagen based UN agencies under a single roof. This embodies the core idea of the United Nations, since this project allows for better efficiency and practicality thanks to joint effort. The first plans for the UN City were hatched in 2002. After 11 years, in 2013 the first stage of the project was finally finished. Presently, Campus 1 of UN City accommodates 1,300 staff member, while Campus 2 is going to become the largest humanitarian warehouse in the whole world.

Girls in red neckerchiefs dance on Red Square, with the GUM, the State Department Store and the Historical Museum in the background, during a ceremony to celebrate joining the Pioneers organization and 100th anniversary of the All-Union Pioneer Organization, in Moscow, Russia, Sunday, May 22, 2022. Pro-Communist Russians are trying to preserve the Young Pioneers, which used to be the Communist league for pre-teens in the Soviet Union. (Photo by AP Photo/Stringer)

A vampire poses for a photograph as she arrives at Whitby Abbey ahead of a Guinness world record attempt to gather the largest number of vampires together in one place, in Whitby, north-east England on May 26, 2022. (Photo by Christopher Thomond/The Guardian)