France's Alice Finot celebrates next to the mascot winning silver in the Women's 3000m final at the 2021 European Athletics Indoor Championships in Torun on March 5, 2021. (Photo by Aleksandra Szmigiel/Reuters)

Olympic gold medal-winning gymnast Hezly Rivera does a flip before throwing out a ceremonial first pitch before a baseball game between the Texas Rangers and the New York Yankees, Wednesday, September 4, 2024, in Arlington, Texas. (Photo by Jeffrey McWhorter/AP Photo)

Sculpture by Danger Dave titled “Damien Hirst Looking for Sharks” is seen on September 13, 2021 in Currumbin, Australia. SWELL Sculpture Festival is an annual exhibition that features 65 large-scale sculptures installed along Currumbin Beach on the Gold Coast in Queensland. (Photo by Matt Roberts/Getty Images)

China's Qinwen Zheng celebrates with fans after winning their second round match against Britain's Katie Boulter at the Australian Open in Melbourne on January 18, 2024. (Photo by Edgar Su/Reuters)

Logan Edra of the United States, known as Logistx, competes in the Women's Breaking dance Round robin of the Paris 2024 Olympic Games at La Concorde in Paris, on August 9, 2024. (Photo by Angelika Warmuth/Reuters)

A woman covers her face as a fire burns in the middle of town during an anti-G20 protest on July 7, 2017 in Hamburg, Germany. Authorities are braced for large-scale and disruptive protests as Leaders of the G20 group of nations arrive in Hamburg for the July 7-8 G20 summit. (Photo by Leon Neal/Getty Images)

Measuring just five feet at its widest point, the ultra-thin home was unveiled in the Polish capital of Warsaw on Sunday, October 21, 2012. Photo: The Keret House is squeezed into the space between two apartment buildings in Warsaw. There's a four-inch gap between the apartment buildings to either side. A perforated steel facade was used to allow in more light. (Photo by Andrea Meichsner/The New York Times)

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)