To help mark the 70th anniversary of the United Nations, more than 350 iconic monuments, buildings, landscapes, museums, bridges, and other landmarks in more than 85 countries across the globe were lit up blue – the official colour of the United Nations – on UN Day, 24 October 2015.

Costanera Center Building, Santiago, Chile

Pisa Leaning Tower, Piazza del Duomo, Italy

Grand Place, Brussels, Belgium

Gardens by the Bay Supertrees, Singapore

Sydney Opera House, Australia

Casa Batlló Gaudí, Barcelona, Spain

Palace of the Culture and Science, Warsaw, Poland

Chattrapati Shivaji Terminus (CST), Mumbai, India

Pyramids of Giza & the Sphinx, Egypt

Heydar Aliyev Center, Baku, Azerbaijan

Qoricancha Temple, Cuzco, Peru

Palace of Monaco, Monaco

Grand Place, Brussels, Belgium

Jeita Grotto, Lebanon

New Arbat Avenue, Moscow, Russia

Hazza Bin Zayed Stadium, Abu Dhabi, City of Al Ain, United Arab Emirates

Great Wall of China, Badaling, China