<http://schema.org/about>
"Ice is perhaps the greenest building material; it is made by nature and at the end of its useful life just melts away. Nor is building with it new; Igloos have been around forever and Ice palaces were a very big deal in the nineteenth century. This grand "^^<http://www.w3.org/2001/XMLSchema#string>
<http://www.treehugger.com/slideshows/sustainable-product-design/frosty-receptions-snow-palaces-and-ice-hotels-around-the-world/>