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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Swinging over Munich
You can take a refreshing dip here any day of the year
Aug. 31, 2023Saguaro cacti, Ironwood Forest National Monument, Arizona
Dec. 23, 2024Celebrating Festivus
Standing on glass 275+ metres in the air
Incan ingenuity
Jan. 25, 2026Burns Night in Scotland
Oct. 1, 2025Clark Range, Yosemite National Park, California, United States
Feb. 28, 2026Oloupena Falls, island of Molokai, Hawaii, United States
The oldest way to fly
Dec. 11, 2025International Mountain Day
Aug. 24, 2024Katahdin Woods and Waters National Monument, Maine, USA
Aug. 18, 2024Huntington Beach Pier, California, USA
Oct. 7, 2023Katmai National Park, Alaska, USA
Dec. 18, 2023Capitol Reef National Park, Utah
Aug. 29, 2023Zelenci Nature Reserve, Slovenia
Dec. 21, 2023December solstice
What are these predators doing?
Aug. 26, 2023Berlin Cathedral and Museum Island, Berlin
May 9, 2024Misool, Raja Ampat Islands, Indonesia
Sep. 20, 2025Oktoberfest begins!
Nov. 7, 2024Vancouver Coastal Sea wolves in the Great Bear Rainforest
Hear it roar!
May 14, 2024Carlsbad Caverns National Park, New Mexico, USA
Nov. 5, 2025Peña Roya beech forest, Moncayo Natural Park, Aragon, Spain
Jun. 16, 2024Happy Fathers Day!
Oct. 4, 2024Nuit Blanche Toronto
Beauty by the bay
Dec. 8, 2023La Rocque Harbour, Island of Jersey
Mar. 17, 2024St. Patricks Day