Postman's Park, London

This is one of the most beautiful things I've seen in my travels. Even though it's little known and I consider it a secret, I'm happy to let many people in on it because it should be seen. Located just up the street from St. Paul's lies a park that was a former burial ground for the city of London. As such, it's elevated above the street level. Named Postman's Park because it was the former location of the General Post Office, the park is the location of the Monument to Heroic Self-Sacrifice. The designer of the park decided to honor those who had given their lives to save others but would otherwise have been forgotten in history. There are over a hundred tiles like the ones below, the latest added in 2007.