Namur is the administrative capital of Wallonie, French speaking Belgium. Namur is located 60 km south-east of Belgium's capital city, Brussels. It is easily accessible by road (the E411 highway from Brussels), train or boat (the Meuse comes from France and flows through the South of Belgium to Holland. The Sambre flow into the Meuse in Namur). Its strategic location - where the rivers Sambre joins the Meuse - was first exploited by the Romans who settled there and used it as a base for trading. From there it became an important city in the region, defended by the citadelle.
Namur is a smallish city and can easily be discovered on foot. The major areas to visit are the centre of Namur itself, the Citadelle and then the areas along the Meuse and the Sambre.
The Centre of Namur sits between the Namur railway station and the junction of the Meuse and the Sambre. The city is easy and nice to walk around in, as many of the older streets are pedestrian. Saturday morning is market day and most streets in the centre are then occupied by market stalls.
The Citadelle de Namur , a historical fortress surrounded by a large parc is strategically placed on a hill between the Meuse and the Sambre. The Romans built a small city a the foot of the hill early in the first century. Later on, from the 9th century on, the place was gradually fortified to enable it to defend the region, and became a principal residence for the Counts of Namur. From then on the Citadelle has played a role in the history of the country. It is a great place for historical, as well as nature walks. The top of the Citadelle offers a great view of the surrounding areas.
At the foot of the Citadelle, there is a bridge crossing to the other site of the Meuse, where Jambes is located. Jambes has its own shops and a market on Wednesday.
Cycling is not too popular with the locals, as the region is fairly hilly. But the city is trying to promote the usage of bikes. Programs such as "li bia velo" (meaning "the nice bike" in Walloon) enable members to rent a bike by picking it up in one station and drop it off at the another. See http://en.libiavelo.be for more informations. There are great walking and/or cycling tours to make along the rivers as both the Sambre and the Meuse have, generally on both sides, paths from where in the past boats used to be pulled. Check Ravel network
Parking in the city can be an issue. The local bus company in Wallonia, the TEC provide "P+R" buses between two car parks in the outer city and the center of the city. The line number is 51 and the two car parks are named "P+R Saint-Nicolas" and "P+R Namur Expo". If you can speak french, you can check it out on the website of the TEC.
Walk up to the Citadel. The easiest way up is using the wide access roads, by themselves not that interesting though there are great views. You can also go up via the stairs starting at Le Grognon (where the Sambre flows in the Meuse) or use shortcuts starting behind the casino, or the Sambre. As you go up, you get a good idea of how the citadelle has been used to defend the region and the passage over the water, crucial in past times.
You can also hire a bicycle and cycle up and through the Citadel. There is also a network of mountain bike itineraries beginning and ending in Namur, but the signage, which was very good at the beginning, with large coloured arrows painted on the road, suddenly vanished without explanation.
Take one of the small boats, called the Namourette and have a short river trip. See https://fr.m.wikipedia.org/wiki/Namourette
Take a train to Dinant for a stroll. You can also cycle all the way to Dinant following the paths along the Meuse, used in the past by the people or animals pulling the barges. Close the Dinant, visit Bouvignes and its hisorical museum. Walk up to the Chateau de Crevecoeur. The place was rendered immortal by Turner see http://www.tate.org.uk/art/artworks/turner-dinant-bouvignes-and-crevecoeur-sunset-d20228.
From nearby Dinant river kayaking trips on the Lesse can be organised. See http://www.dinant-tourisme.com/dinant/produits/listing/i123/Descente-de-la-Lesse.html
If you had your own boat, it is would possible to paddle downstream all the way to Holland and the North Sea. Though you would have to pass the locks and at a certain stage the Meuse goes in the Rhine and you ll be meeting a lot of big barges.
One weekend per year, at the end of September or the beginning of October, a big fair called "Fêtes de Wallonies" takes place. It involves drinking a lot of alcohol, mainly the a local type called "Peket". During the afternoon, many concerts, some in Walloons, are given. Avoid staying too late as most activities ends after the evening and then streets consist mostly of a lot of drunk people.
There are public swimming pools in Salzinnes and Jambes.
Namur is one of these older cities were shopping is outside in the streets. Major shopping streets stretch from the Namur train station to Rue de Fer and Rue de l'Ange where you will find normal fashion outlets like H&M, Newlook,Zara, Kim Pie,Cool Cats, O' Appels, Charles Vogele Switzerland, Esprit, JBC, C& A, Women's secret, ICL Paris IV, Di, Camaieu among others. The more interesting shops - independent outlets - are in the little streets.
The inner city supermarkets are one Match and one (smaller) Spar.
On Saturday morning there is a large market spread out in all the inner city main streets. A great way to buy anything you need and sample the market atmosphere.
supermarkets in the bigger city are Carrefour, Colruyt in Jambes and Delhaize.
Brussels is at about 50' by train.
From Namur you can also take a train to Liege or Charleroi.
Dinant, located about 30 km from Namur upstream, is worth a visit. The place is easily accessible by train and car. If you are up there, do visit de museum of Bouvignes  which focusses on the medieval heritage of the region.
Namur might also be your gateway to the Ardennes and Luxembourg. There is an international train going to Basel, Switzerland and from there to Zurich and Chur.