The Google Maps Team has teamed up with The Earth Day Network to create a Google Maps mashup aimed at pointing tourists in the US toward "environmentally friendly activities, attractions and amenities." Dubbed "Summer of Green", the site features audio and video tours of 5 US cities (Houston not on there....YET), creating a local map for each. The info-windows for each attraction appear to be mashing up video clips from Google Video and display. The site incorporates Google Maps' directions feature and also a way to search Maps for other locations.