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Two nuns tiptoe their way through rows of sleeping pilgrims ahead of Pope Benedict XVI's closing mass at the World Youth Day jamboree near Cologne.

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Not everybody looked rested after a chilly night in the open-air.

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Some had wrapped themselves up in blankets. Others took shelter under plastic sheets.

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Here, two pilgrims find some comfort by putting lit votive candles near their legs.

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A group of youths and nuns armed with foldable chairs walk through the morning mist, ready for the mass.

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Pope Benedict XVI arrived at Marienfeld, the site of a disused mine outside Cologne, in his glassed-in popemobile .

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He conducted the service from a specially-constructed altar.

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Hundreds of thousands of Roman Catholics attended the Mass, all hoping to get a glimpse of the German pope.