A man covered with thermal blanket walks along railway tracks beside an improvised refugee camp on the border line between Macedonia and Serbia near the northern Macedonian village of Tabanovce, Thursday, March 10, 2016. Around 1.500 migrants and refugees are stranded at Tabanovce transit center for refugees in northern Macedonia. (Photo by Boris Grdanoski/AP Photo)

A spectator at the Maslenitsa car battle, reacts during a clash, in the village of Goroshki, some 35 kilometers from Minsk, Belarus, 12 March 2016. The battle which is held at the Historical and Cultural Complex, Stalin line, is a small local competition, with participants from Belarus and Russia. (Photo by Tatyana Zenkovich/EPA)

An employee works on the automobile assembly line of a Citroen C3 car at the PSA Peugeot Citroen plant in Poissy, near Paris, France, April 29, 2015. PSA Peugeot Citroen said on Wednesday its revenue rose in the first quarter as the recovering French carmaker's efforts to raise prices helped offset weaker volumes. (Photo by Benoit Tessier/Reuters)

A woman with a Hello Kitty tattoo waits in line to attend the Hello Kitty Con, the first-ever Hello Kitty fan convention, held at the Geffen Contemporary at MOCA Thursday, October 30, 2014, in Los Angeles. The convention was held to honor the character's 40th birthday. (Photo by Jae C. Hong/AP Photo)

A woman rides the world's longest urban zip line, with a speed of up to 80 kilometers per hour on a one kilometer run from 170 meter to ground level, in the Marina district of Dubai, United Arab Emirates, Tuesday, December 5, 2017. (Photo by Kamran Jebreili/AP Photo)

One woman was pictured sitting bare foot on a pavement in Leeds in the northern English county of Yorkshire on May 30, 2021. With the sun streaming down, Brits have been taking full advantage of the three-day weekend by packing out pub gardens and lining up the beers at bars. (Photo by Nb press ltd)

Young conductors stand in line during the steam locomotive presentation at the Kyiv Children's Railway Station on July 3, 2022 in Kyiv, Ukraine. According to the railway's operators, the Gr-336 locomotive was built in Germany in 1951 and brought to Kyiv as part of reparations in the wake of World War II. (Photo by Alexey Furman/Getty Images)

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.