My recommendations would be Christiania, the swimming area at Islands Brygge (where you can take a dip in the cool, clean salt-water of the Copenhagen channel), or rent a bike and head north along the coast towards the beaches in Klampenborg and beyond, while looking at the magnificent houses along the way.

CNN: Copenhagen: A local's view

Rather than prattle on about the coming apocalypse, they could work to replace treeless, dense slums with shaded low-lying clean houses that are easier to heat or cool.

FORBES: The Green Movement's People Problem

He crossed the stream, picked a double handful, washed the muddy roots clean in the current and then sat down again beside his pack and ate the clean, cool green leaves and the crisp, peppery-tasting stalks.

NPR: Robert Jordan, Hemingway's Bipartisan Hero

Iceland's farmers, long used to scratching a hard living from their unfertile land in its cool climate, now hope to export their clean beef and lamb at a premium in the wake of the foot-and-mouth outbreak in Europe.

ECONOMIST: David Oddsson, Iceland��s Eurosceptic leader