It's incredible! A lot of patience and effort!
Source: http://www.boredpanda.com/bringing-peace-love-and-happiness-to-the-world-one-installation-at-a-time/
Source: http://www.boredpanda.com/bringing-peace-love-and-happiness-to-the-world-one-installation-at-a-time/
Tag Spam = Using irrelevant tags, especially popular tags. Using tags improperly makes it hard to find good and relevant content.
Please refrain from using #photography or #art for posting art, posting graphics, posting other users photos without commentary on the photographer or the photography techniques, the art captured, etc. Abusing tags can potentially lead to people flagging you, even from dan himself.
You could warn. And not to put flags at once.