18 April: World Heritage Day

The International Day for Monuments and Sites, also known as World Heritage Day, is observed on 18th April.

The theme for World Heritage Day 2022 is "Heritage and Climate".
To promote the Day, the Archaeological Survey of India, which maintains 3,693 monuments, has allowed free entry to centrally protected monuments on the occasion of World Heritage Day.
The entry is also free on International Women’s Day on March 8 and World Heritage Week celebration on November 19.