International Mountain Day 11 Dec 2023

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

International Mountain Day
11 Dec 2024International Mountain Day
11 Dec 2025International Mountain Day

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Who uses this grassy bridge?
13 Dec 2025Merced River, Yosemite National Park, California, United States
23 Jun 2025Elbe river in Dresden, Saxony, Germany
28 Dec 202350 years of the Endangered Species Act
25 Jul 2025Colourful houses of Las Palmas de Gran Canaria, Spain
27 Apr 2025London Marathon
26 Jul 2025International Day for the Conservation of the Mangrove Ecosystem
In hot water
31 Dec 2025Hogmanay
Man-made, meandering Lake Powell
14 Jun 2025Trooping the Colour
26 Mar 2026Logan Creek Suspension Bridge, West Coast Trail, Canada
Autumn in Georgia
28 Mar 2024Cherry blossoms in Shanghai, China
27 Jul 2025Barracudas at Shark Reef, Ras Mohammed National Park, Sinai Peninsula, Egypt
A view that’s out of this world
14 Dec 2024Christmas Bird Count turns 125
Germanys green heart
Meet for lunch?
28 Oct 2025The Gothic Gate in the Adršpach-Teplice Rocks, Czechia
Picture perfect
Passing with flying colours
27 Apr 2026The glass dome of Galleria Vittorio Emanuele II, Milan, Italy
13 Oct 2023Vieste, Apulia, Italy
23 Oct 2024Madame Sherri Forest, New Hampshire, United States
28 Jan 2026Whanganui National Park, Retaruke, New Zealand
31 Jul 2025Kalalau Beach on the Nā Pali Coast, Kauai, Hawaii, United States
28 Jul 2024Colourful bathing huts on the beach in Skåne County, Sweden
13 Nov 2025Quiver trees, Keetmanshoop, Namibia
History in the making