When you perform a search in Google Maps and click on "more info" next to a search result, Google opens a new page that aggregates useful information about places and local businesses. Until now, Google showed an expanded bubble directly on the map.
The new Google Maps pages have user-friendly URLs like http://maps.google.com/places/fr/paris-city and they include a lot data: photos and videos from Panoramio and YouTube, user-generated maps, reviews, related web pages, information from Wikipedia, Street View imagery.
"We think Place Pages will make searching much easier (and hopefully more fun!) for our users, but we're also excited about what it means for business owners. By default, users looking for local businesses can easily view ratings for your business, reviews, related maps, find nearby transit options showing them how to get to you, and take a look at your business with a Street View preview - and it's all on one page," says Google LatLong blog.
While new Place Pages look nice, they have a big drawback: when you click on "more info" next to a search result, Google Maps opens a new page and you lose the context, so it's difficult to compare the results. To go back to the list of results, you need to use your browser's back button.