Just in front of the train station there's a beautiful park called Le Jardin des plantes Don't hesitate to take a break there, you'll see some ducks, turtles, does (or something like that i'm not zoologist)
Here is the quartier Bouffay ! Don't miss the Mc Byrne a very good pub on the left (always overcrowded and they speak english of course better than me), and on the right if you love greek food there's a nice restaurant wich I don't remember the name but their kebabs are delicious.
Visual Poetry ? At least, a attempt.
"Nantes : Peut être ... la seule ville de France ... où un esprit d'aventure au delà de toutes les aventures habite encore certains êtres" André Breton