Maya Lin's "Ecliptic" outdoor area in Grand Rapids,Michigan features water in its three states: liquid,gas and solid.

VOA: special.2009.05.06

We also climbed the rocks beside a roaring run of white-water rapids on rivers that have never been navigated.

CNN: ASIANOW - TIME Asia | 'There Was Method to My Madness'

The two are working on an economic-impact study of the restoration initiative that would create white-water rapids downstream of the city's largest spillway dam.

WSJ: Real Rapids in Grand Rapids?

Streams running off the southeastern slopes of the Andes soon turn into boisterous rivers with plenty of class III and IV white water rapids.

BBC: Venezuela��s Andean playground