The world in photos: May 18-24

A volunteer with Massachusetts Military Heroes Fund, replaces damaged flags in the fund's flag garden on Boston Common in Boston, ahead of Memorial Day, Boston, US, May 21 2015. [Photo/IC]

Here's a look at some of the most striking images from major stories around the world in the past week. Young Buddhist monks ride on roller coaster in S Korea. British royal family adds color to Chelsea Flower Show. Ireland becomes the first country in the world to adopt same-sex marriage.