A period of relative stability has put the Iranian capital No1 on the list of world cities that have achieved biggest improvements in liveability over the past five years, as calculated by the Economist Intelligence Unit. The “most improved” top 10 contains some unexpected names. So, eg, the fourth place: Abidjan, Ivory Coast. Latest ranking: 128; Ranking five years ago: 131; Five-year index movement: 3.8%. Here: A supporter of Ivory Coast president Alassane Ouattara campaigns in a market in the city’s Koumassi quarter. (Photo by Sia Kambou/AFP Photo)

Swedish actress Rebecca Ferguson attends the World Premiere of “Dune: Part Two” in London's Leicester Square on February 15, 2024 in London, England. (Photo by Hannah McKay/Reuters)

Canadian actress Nina Dobrev takes her injured leg to Jessica Szohr’s bachelorette party early July 2024. (Photo by nina/Instagram)

People in costume as a Minecraft bee (left) and Crying Child from Fright Night at Freddy's 4 (right) at the Sheffield Anime & Gaming Con at the Mercure Sheffield in London on Sunday, September 17, 2023. (Photo by Danny Lawson/PA Images via Getty Images)

Singer Dua Lipa and her fiancé, Callum Turner, soak up the sun and unwind together during their lively vacation in Ibiza, Spain on August 14, 2025. (Photo by Gtres/Backgrid UK)

Common squirrel monkeys observe their Christmas present, a box full of mealworms, at the South America enclosure of the Budapest Zoo, in Budapest, Hungary, 24 December 2017. (Photo by Photo by Attila Kovacs/EPA/EFE/Rex Features/Shutterstock)

A group of girls hit the town in York, United Kingdom on December 30, 2020. Revellers hit the streets for a final drink before being plunged into Tier 4 lockdown. (Photo by Nb press ltd)

Gold Lame suit worn by Elvis Presley at the Direct from Graceland: Elvis exhibition which is held at the Arches London Bridge on October 19, 2023 in London, England. (Photo by Lia Toby/Getty Images)