What: The Anzac Day dawn service.
Where: Anzac Cove on the Gallipoli Peninsula in eastern Turkey, 350km from Istanbul.
When: April 25
Why: To commemorate the ill-fated invasion of Turkey by Allied troops in 1915.
Do it because: A huge sense of national identity and pride of the young nations of Australia and New Zealand was forged from the Anzac spirit during World War I. You can ruminate on the inherent folly of war, and spare a thought for the Turks, who had their homeland invaded.
How much: You need to book an organised tour to get to the peninsula for the Anzac Day dawn service. These can cost under £100 for a return trip from Istanbul.