The Occupy Wall Street protesters in New York City are preparing for the possibility of a punishing winter by erecting tents designed to withstand frigid temperatures.

Some of the military grade tents are as big as tiny cottages. They began popping up Monday, with the first planned for medics and another designated as a safe space for women.

Protester Jeffrey Brewer says three tents have been erected in Manhattan's Zuccotti Park and he's helping to install four more. He says another 20 are being ordered.

Brewer says the tents are costing the protesters about $25,000 total. He says they're paid for through donations the Wall Street protest group has received.

The company that owns the park where the protesters have set up camp doesn't allow tents but hasn't been enforcing the rule.

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Samantha Gross can be reached at http://www.twitter.com/samanthagross