Pokémon GO is an app for mobile devices that lets users find and train Pokémon in an augmented reality world. What that means is that people are getting outside and staring at their phones. It's actually a pretty fun game. The basic concept is that you have to find Pokémon and supplies.
Supplies are hidden all over town at virtual Pokéstops. The graphic below is some of the Pokéstops at the River Market in downtown Little Rock.
Pokéstops, gyms, and Pokémon are actually mapped to Google Map data points. Memorials, landmarks, and special structures are usually a good place to find supplies and Pokémon gyms. The River Market, The River Trail and most of our city parks are full of them.
Sources say that Pokémon GO's database is based on Niantic's portal database for Ingress. If you play Ingress, the Ingress portals are also Pokéstops. You can find out more information on that by registering for Ingress, but you don't have to be a computer pro or register for anything to find Pokéstops. They're everywhere.
So, head to your app store for Android or Apple, charge your phone battery (the app relies heavily on GPS, so it's draining) and head outside to experience Nintendo's augmented reality game. Do regard the game warning to keep your eyes on your surroundings and don't train and drive.
Since Pokéstops are usually landmarks and memorials, the River Market (and downtown Little Rock) are full of Pokéstops and gyms. It seems to be true that you find Pokémon in their natural environment (water Pokémon are near water, for example). The Clinton Library has a Pokémon gym and there are about 5 others in the vicinity. If you hop on the River Trail or the Riverwalk area of the River Market, you're bound to find tons of water Pokémon. There are quite a few Pokéstops just in the downtown area and restaurants. The museums like MOD and the Clinton Center are great spots to recharge.
There also seem to be quite a few Pokéstops and a few gyms around Main Street and quite Pokéstops and a gym at the capitol grounds.
The downtown area has the most concentration of gyms and Pokéstops in Little Rock.
Shackelford and Markham
There are quite a few Pokéstops and gyms in the shopping centers around Shackelford and Markham. They are usually centered around some sort of statue (like the horse at PF Chang's) or a sign (Twin Peaks has a Pokéstop at its sign). Shopping centers are generally a pretty good bet to find Pokéstops.
MacArthur Park, the museum, and the Arkansas Arts Center are great places to hunt for Pokéstops and Pokémon (and there are a few gyms). There's a pretty high concentration of landmarks in the area, so there are quite a few stops.
Some of the mausoleums and markers in Mount Holly are actually "landmarks" according to Google, and they have Pokéstops. A few other cemeteries around the city have them too, but Mount Holly is a great place to learn some Arkansas history while Pokémon hunting. Some people say that you can find ghost types in cemeteries. Just be respectful when you visit a cemetery. For most of the stops, you don't even have to enter the gates.
You can find several cool Pokémon, lots of Pokéstops and about 3 gyms while walking through the Little Rock Zoo. Take your kids hunting for Pokémon and teach them about some real animals while you're at it. just don't try to catch or throw balls at the real ones.
Churches, Libraries, Hospitals and State Buildings
Most churches, libraries, hospitals and state buildings will have at least one Pokéstop. You can really build up your stash at a park. Usually, a church only has one or two Pokéstops (but you can reuse a single stop every 5 minutes).
Outside of Little Rock
There don't seem to be as many Pokéstops in North Little Rock, but you can find some at Burns Park and in the Argenta district.
Lake Wilastein Park in Maumelle has three gyms and several Pokéstops.