Count Perkins Coie among the firms switching spaces and looking to incentivize collaboration in a new era of office work.

The No. 42-ranked Am Law firm announced that it's officially moving its Chicago presence Monday, from 131 S. Dearborn Ave. to the Bank of America Tower, a 57-floor skyscraper at 110 N. Wacker. The building is adjacent to the Chicago River and located in the city's primary business district.