St Etienne Cathedral: When you walk in and look up, you see huge ornate organ pipes that look as if they are clinging onto the wall. Basilique St Sernin is well worth a visit to see a wonderful example of Romanesque architecture. There is also a wonderful food hall off rue des ramparts matabiau, where you can buy local meats, cheeses, fish, pastries and breads. Along this street are cafes and other (quite upmarket) shops selling local produce -- an amazing amount of choice and quality.
You can take a walk along beside the river Garonne from the Pont Neuf to the St Pierre Bridge. There are red brick apartment buildings along the riverfront, a lot of them with intricate terraces and you can also get a great view of the Pont Neuf stretching across the river. If you walk down to Place St Pierre, you can find bars and restaurants in what seems to be a student quarter. We ate at a restaurant with the word "Culotte" in it, but I can't remember the full name. There were quite a few university students lunching here, probably because of the set menus including a glass of beer or wine.
Quick Tips:
Wandering the small back streets of Toulouse, you can see the beautiful shuttered houses and apartments of the "la ville rose". When you wander these emptier back streets, you stumble upon artisan workshops selling local crafts and artwork and see much of the famous red brick architecture.
You also end up in smaller squares such as Place St-Georges where you find brasseries and restaurants and can sit outside even towards the end of September to sip a Kir in the sunshine. We ate at the elegant Cafe VG, but there were several other brasseries and restaurants we would have liked to have sampled if we had had more time.
Best Way To Get Around:
Toulouse does have a metro, but the best way to get around is on foot as all the main attractions are within walking distance and you can experience the sights, sounds, and smells first hand!