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NEW YORK ( WCBS ) -- Public school math teacher Christopher Burke has a unique goal: to walk every single block of Brooklyn.

Along the way, he's uncovering hidden pieces of the borough's history.

"I was a sub, so I was working at different schools. So I started walking home from different schools and I started mapping it out," he recalled on a recent walk.

Burke, who grew up in Park Slope, began this ambitious journey in 2019 as a personal challenge and a way to connect more deeply with the place he calls home.

"There are a lot of memorials all over Brooklyn that I never knew about," he told CBS News New York's Hannah Kliger.

Meticulously tracking his progress on his phone, Burke estimates he's covered almost the entire western half of the borou

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