It isn't very often that I'm floored by landscape installations, but
West 8's City on Fire/City in Bloom is a sight to be held.

The temporary installation commemorates the 1940 bombing of Rotterdam by the Nazis - a moment the razed an entire city to the ground. The flower sculpture is comprised of 64,000 red and purple flowers meant to illustrate the history of a once-burning city, now in bloom. The display was supposed to run through the end of June, but was extended by popular demand.
Here's an awesome video on the construction and
preparation involved. The video begins with a German poem in the first 53 seconds, but moves on after that: