World Heritage Day 2026 Observed Globally. Important Days | Dated: 18 Apr 2026 World Heritage Day, also known as the International Day for Monuments and Sites, is observed globally on April 18. The day promotes immense awareness about the diversity of cultural heritage and the deeply urgent need to preserve ancient monuments. 🎯 Key Highlights: The theme for 2026 focuses heavily on Heritage for Future Generations. The day was officially proposed by the International Council on Monuments and Sites. UNESCO completely approved the observance of this day in 1983. 💡 Other Important Facts: Day: World Heritage Day. Date: April 18. Focus: Cultural Preservation. 📚 Test Your Knowledge: World Heritage Day is celebrated annually on which date to raise awareness about the preservation of cultural monuments? Correct Answer: April 18 🚀 Quick Recap: About ICOMOS Full Form - International Council on Monuments and Sites Headquarters - Paris, France