A homeless man rests on the side of a street at the old quarter of Yemen's capital Sanaa November 27, 2015. (Photo by Khaled Abdullah/Reuters)

Dogs perform during “Stars and starlets”, a new programme, at the National Circus in the Ukrainian capital of Kiev April 30, 2015. (Photo by Gleb Garanich/Reuters)

A mask seller wearing a mask stands in a street market in Bangkok, Thailand, Tuesday, June 9, 2020. Daily life in capital resuming to normal as Thai government continues to ease restrictions related to running business in capital Bangkok that were imposed weeks ago to combat the spread of COVID-19. (Photo by Gemunu Amarasinghe/AP Photo)

Sudanese protesters rally outside the army complex in Sudan's capital Khartoum on April 18, 2019. Huge crowds of protesters thronged the Sudanese capital Khartoum today, a week after the army's ouster of president Omar al-Bashir, determined to complete their revolution seeking civilian rule. (Photo by Ozan Kose/AFP Photo)

A model poses at Checkpoint Charlie, a historic place in the German capital to promote the fashion magazine “Sous” on June 12, 2012. (Photo by Maurizio Gambarini)

An Egyptian horse owner cares for one of his animals at stables in Giza near the capital on May 26, 2024. (Photo by Khaled Desouki/AFP Photo)

Fog hangs over the east of the capital on a frosty Sunday morning on January 12, 2025 in London, UK. (Photo by David Levene/The Guardian)

A couple walk in the Retiro park in Madrid on November 17, 2020 as a thick fog falls on the Spanish capital. (Photo by Gabriel Bouys/AFP Photo)