People watch as water pours from the Pontcysyllte Aqueduct near Llangollen, north Wales, November 9, 2009. The 204-year-old aqueduct built by Thomas Telford is a world heritage site and is being drained for cleaning ahead of next year's visitor season. Reuters Pictures logo Reuters Pictures 27 months ago

People watch as water pours from the Pontcysyllte Aqueduct near Llangollen, north Wales, November 9, 2009. The 204-year-old aqueduct built by Thomas Telford is a world heritage site and is being drained for cleaning ahead of next year's visitor season.