Lakabe, an abandoned Spanish medieval hamlet, has been transformed into an eco-village (ecoaldea in Spanish). Currently, a few dozen ecoaldeas dot the Spanish landscape. Most of the eco-villages were rebuilt from Medieval town ruins, though some not. Approximately 3,000 abandoned medieval villages exist within Spain (Dirksen 2011).
The town of Lakabe, located in Spain’s northern Navarra mountains, was one of the first tiny hamlets to be re-populated and transformed into a self-staining ecoaldea. It was discovered by nearby people looking for their goats during the 1980s. Afterwards, a group of urbanites moved in to re-populate it. At first, they all lived in one room. Then they gradually rebuilt the homes and re-established gardens. The focus was on ecologically- and sustainably-sound living, so plants continue to be replaced and the homes contain solar-savvy technology. They also built windmills, raised chickens, and rebuilt and used a bakery (Dirksen 2011).
They sell their bread from the bakery to others for income. Others come to them for help on projects, due to the experience they gained on their project (Dirksen 2011).
The first link takes you to the original story and write-up on faircompanies.com. Faircompanies.com has a lot of other interesting articles as well. The second link takes you to the Upworthy link to the YouTube video, which is where I first heard of it.
2011 Medieval Spanish Ghost Town Now Self-Sufficient Ecovillage. Fair Companies (uploaded 2011). Electronic document, http://faircompanies.com/videos/view/medieval-spanish-ghost-town-now-self-sufficient-ecovillage/, accessed April 12, 2013.