There are few more refreshing experiences than to arrive in Aix at the end of a long hot afternoon and walk under the arching plane trees and past the fountains of the Cours Mirabeau.
There are palm trees near the Cours Mirabeau. 
mnli hypothesis: There are palm trees near the Cours Mirabeau.  premise: There are few more refreshing experiences than to arrive in Aix at the end of a long hot afternoon and walk under the arching plane trees and past the fountains of the Cours Mirabeau.