International Mountain Day Dec. 11, 2023

International Mountain Day

Peek at your calendars! December 11 is International Mountain Day, a special day designated by the United Nations General Assembly back in 2003. The theme for this year"s commemoration is "Restoring mountain ecosystems," connecting with the UN"s Decade on Ecosystem Restoration.

© Hung Chung Chih/Shutterstock

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Today in History

Floating mailboxes
Dec. 11, 2024International Mountain Day
Dec. 11, 2025International Mountain Day

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Mar. 13, 2025Holi celebration in Jaipur, India
Chasing summer in the art world
Jan. 25, 2025Porto, Portugal
Mar. 16, 2024Giant panda, Chengdu, China
Sep. 15, 2023Glenariff Forest Park, County Antrim, Ireland
Feb. 19, 2026Dragons Eye, Uttakleiv Beach, Norway
Jan. 18, 2024Pont Alexandre III, Paris, France
Sep. 22, 2024Autumn equinox
Sep. 2, 2024Milky Way over the Elbow River in southern Alberta
Aug. 22, 2025Rolling hills of the Palouse, Washington, United States
A view that’s out of this world
Feb. 11, 2026Death Valley National Park, California, United States
Oct. 19, 2025Apples ready for harvest, Minnesota, United States
Blue hues and ceramic scenes of Porto
Canoeing in solitude
Sep. 17, 2023Cuban tody, Alejandro de Humboldt National Park, Cuba
Jan. 4, 2025Bản Giốc – Detian Falls, Vietnam
Oct. 19, 2023Mekong River Delta, Long An, Vietnam
May 18, 2024International Museum Day
Jellies in a world of their own
Gateway to Latin America
Apr. 30, 2024Cheetah in Ngorongoro Conservation Area, Tanzania
Sep. 27, 2023Via Krupp, Capri, Italy
Oct. 13, 2025Happy Thanksgiving!
Wait, mountain—you shall bear my castle!
Oct. 30, 2023Common raven
Celebrating our looming lunar neighbour
Nov. 17, 2025Red fox
Dec. 20, 2023Val Gardena, South Tyrol, Dolomites, Italy
Reflecting on Christmas