The King said he was impressed by the design of Europe's first eco mosque and praised "all the care and attention which has been lavished on it".Charles, 77, was told about the environmental credentials of Cambridge Central Mosque as he toured the place of worship.He was greeted by cheers from well-wishers in the street as he stepped out of a maroon Bentley in front of the mosque on Monday afternoon.He spoke to dignitaries in a paved garden with a fountain before moving inside the mosque.Charles took off his shoes before walking through to a prayer hall where he spoke to more people.He joked with some schoolchildren that he hoped he had not "ruined the holidays too much by dragging you in here".