Mont Saint Michel

It can be reached from Rennes by taking a bus for about 1,5 hour to La Caserne from where there is a free shuttle bus to the mount

(*) view of mont from La Caserne

(*) view of mont just before getting in

Come prepared with healthy patience to share any space with lots of tourists ... like you :-)
and  climb lots of stairs and meet some doves

witness a religious ceremony also

a free walk ... or climb :-)

and come back to Rennes for fuel replacement :-)