By public transport:
Nantes Atlantique airport is located in the immediate vicinity of the Nantes ring road :
To go to the city center from Nantes Train Station: exit « SNCF station North », tram line 1 (direction François-Mitterrand).
Tourism in Nantes: https://www.levoyageanantes.fr/
Public transportation tickets ans itineraries: https://www.tan.fr/
To rent a bike: https://www.bicloo.nantesmetropole.fr/home