Built in the 2nd century, it's a complete wall that surrounds the galician city of Lugo. It's 2.117 metres long, the walls are from 4'20 metres to 7 metres wide and from 8 to 12 metres tall. There are preserved 71 of the original 85 towers and 2 original doors. World Heritage Site by Unesco since 2000.

http://mw2.google.com/mw-panoramio/photos/medium/91473.jpg

http://www.culturaclasica.com/files/murallas_lugo.jpg

http://www.kalipedia.com/kalipediamedia/historia/media/200707/12/hisespana/20070712klphishes_19.Ies.SCO.jpg

http://www.google-earth.es/uploads/forums/muralla_romana_de_lugo.jpg

I failed in this thread, can an administrator delete this, please? I posted it again with the correct poll.

Will be done. ;)