World Cities Summit kicked off here today in presence of Singapore's Prime Minister Lee Hsien Loong, with participation of more than 150 countries from all over the world. The Ministry of Municipal and Rural Affairs represented the Kingdom of Saudi Arabia in this summit. The Saudi pavilion will show achievements during the era of the Custodian of the Two Holy Mosques King Abdullah bin Abdulaziz Al Saud and the Crown Prince in the field of constructional development.