<http://schema.org/alternativeHeadline>
"Urban birdhouses get the Google Maps treatment with Taiwanese designer Shu-Chun Hsiao's clever, eye-catching Project Google Birdhouse."^^<http://www.w3.org/2001/XMLSchema#string>
<http://www.mnn.com/your-home/at-home/blogs/google-maps-birdhouses-provide-shelter-navigational-aid-for-winged-travelers>