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)

Rapper Cardi B attends the 65th GRAMMY Awards on February 05, 2023 in Los Angeles, California. (Photo by Matt Winkelmeyer/Getty Images for The Recording Academy)

Colombian singer and songwriter Karol G poses on the red carpet during the 24th Annual Latin Grammy Awards show in Seville, Spain on November 16, 2023. (Photo by Marcelo del Pozo/Reuters)

Bebe Rexha attends the 61st Annual GRAMMY Awards at Staples Center on February 10, 2019 in Los Angeles, California. (Photo by Rich Fury/Getty Images for The Recording Academy)

(L-R) Charlotte Lawrence and Olivia Rodrigo attend the 67th Annual GRAMMY Awards at Crypto.com Arena on February 02, 2025 in Los Angeles, California. (Photo by John Shearer/Getty Images for The Recording Academy)

Cuban-American singer-songwriter Camila Cabello attends the 65th GRAMMY Awards on February 05, 2023 in Los Angeles, California. (Photo by Kevin Mazur/Getty Images for The Recording Academy)

Puerto Rican model Aleyda Ortiz attends the 20th annual Latin GRAMMY Awards at MGM Grand Garden Arena on November 14, 2019 in Las Vegas, Nevada. (Photo by Danny Moloshok/Reuters)

Actress Laverne Cox attends The 59th GRAMMY Awards at STAPLES Center on February 12, 2017 in Los Angeles, California. (Photo by Christopher Polk/Getty Images for NARAS)