International Day for Monuments and Sites Apr. 18, 2025

Imagine a world without the pyramids, the Great Wall or ancient cave cities—hard to picture, right? That"s why April 18 is the International Day for Monuments and Sites, an event recognised by UNESCO dedicated to protecting cultural treasures worldwide. This day is all about celebrating our history, raising awareness about endangered sites and making sure future generations can enjoy them too.

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Today in History

A mountaintop cultural wonder
Apr. 18, 2024International Day for Monuments and Sites
Apr. 18, 2026World Heritage Day

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Apr. 5, 2025Gaztelugatxe islet at sunset, Basque Country, Spain
Dec. 25, 2023Christmas Day
History awaits atop the hill
Mar. 16, 2024Giant panda, Chengdu, China
May 6, 2025An ultralight aircraft flying over the sands of Namibia
Bridging the gap two ways
Apr. 16, 2024Union Square, Manhattan, New York, USA
Aug. 10, 2024Joshua Tree National Park, California, USA
Sep. 3, 2025Grizzly bears at Katmai National Park and Preserve, Alaska, United States
Feb. 26, 2025Castle Stalker, Argyll, Scotland
Sep. 13, 2023Hemakuta Hill, Hampi
Mar. 31, 2026Paradise Cave, Phong Nha-Ke Bang National Park, Vietnam
Frosty Finland
Feb. 15, 2025The natural ice wall of Misotsuchi, Chichibu, Japan
Oct. 25, 2025Martimoaapa Mire Reserve, Finland
The ‘Old Bridge,’ reborn
Dec. 5, 2025Maya site of Copán
Dec. 9, 2023Los Glaciares National Park, Patagonia, Argentina
Oct. 11, 2024Celtic Colours International Festival
Willamette National Forest, Oregon
Jun. 20, 2025Summer solstice
Sequoias of the sea
Dec. 1, 2023Lake Minnewanka, Alberta
Jan. 24, 2024Diamond Beach, Iceland
Sep. 29, 2023Mid-Autumn Festival
Feb. 26, 2026Grand Canyon National Park, Arizona, United States
Aug. 17, 2024International Lighthouse and Lightship Weekend
Jun. 14, 2025Cinque Torri, Dolomites, Italy
Aug. 22, 2023Amphitheatre of El Jem, Tunisia
Fourth rock from the sun