Google+ Local made a mess of Google Places.
In the good old days, smart businesses signed up to manage their already existant Google Places pages, adding information on hours, products, and photos to the search results that turned up in Google Maps. Customers could find out all they needed to know about a business, plus reviews, on a Google Maps search result, which brought up those Google Places. Business owners also maintained their Google+ Business Page alongside their Facebook Page. One was map-based, the other two were social media properties.
Then Google created Google+ Local, through their Google+ social networking system, and phased out Google Places. And for a while, business owners had the conundrum of having a Google+ Business Page and a Google+ Local Page with no way to connect them together and have control over the entire package.
You can now connect the two, and you should.