If you like viewing impressing buildings, you might want to take a look at the Peace Palace in The Hague, the Netherlands (in Dutch: Vredespaleis). A visit to the Peace Palace is fairly easy, and will leave you with impressive memories.
Outside of the Peace Palace in The Hague, you will find many peace-related messages and art installations, including a patch of grass surrounded with tiles saying ‘peace’ in various languages.
Near the Peace Palace, you can also find the World Peace Flame (wereldvredesvlam).
Hands reaching out to each other, painted on a bench outside of the Peace Palace in The Hague.