Porto city view (at http://www.glia2019.eu/?s=venue): source http://www.geobuch.de/geos-unterwegs-porto-im-november/

Alfandega view at night (at http://www.glia2019.eu/?s=venue): source http://visitporto.travel/Visitar/Paginas/Descobrir/DetalhesPOI.aspx?POI=2171

Alfandega interior views (at http://www.glia2019.eu/?s=venue): Egidio Santos

Port wine ships and bridge (at http://www.glia2019.eu/?s=venue): saiko3p – Fotolia

Roofs of Porto (at http://www.glia2019.eu/?s=registration-accommodation): Hsinyn Chuang – Flickr