Spa is a town in the Ardennes, Liège (province), Belgium. It is famous for its mineral springs, and -subsequently- for putting the word 'spa' into 'spa-town'. (The water from the springs -which goes by the name Spa - is sold throughout Europe .)
Though it is not particularly important nowadays, Spa's elegant architecture bears witness to the fact that it once attracted kings, queens and nobles from all over Europe. The towns setting in a deep, wooded valley is undeniably picturesque, as is the surrounding countryside, and these things combined make it well worth a visit.
By train: In order to reach Spa by train, one has to change trains in Pepinster, where most trains between Liège and Verviers/Aachen stop. There are two stations in Spa, which are called Spa and Spa-Géronstère.
Spa is small enough to explore on foot, though one would need a car (or at least a bike, though the hills are steep) to explore the surrounding countryside.
There are a number of museums in Spa. Don't forget the nearby eleventh century castle of Franchimont.
There are a number of spa's as well as a casino. It is also internationally famous for the nearby Spa-Francorchamps Formula One racetrack.
Eat, drink and sleep
There are a number of restaurants in Spa.
There are a number of hotels and campsites in Spa.