• While in Paris drive to the Porte d'Orléans or Porte d'Italie
  
• Follow signs to the A6 highway, direction – Lyon
  
• Once on the A6, follow the indications for the A10 highway, and exit direction – Bordeaux
  
• Once on the A10, take the "Orsay/Bures sur Yvette" exit
  
• Off the exit, you will be on the N188 which you must follow through a wooded area
  
• Follow the indications for "Orsay" which will take you to the N118 expressway
  
• Once on the N118, take the next exit, "Orsay centre"
  
• At the end of the exit ramp, turn right onto rue Guy Moquet
  
• At the traffic signal on rue Guy Moquet, turn right onto rue Charles de Gaulle and cross the bridge over the river
  
• Follow the road to number 18 (it will be on your right)
  
• Turn into the driveway (to the right of the entrance to the residential building) and continue until you reach Imagine Optic's parking lot behind the building

By train (RER) from Paris (very convenient)

• Take the RER B (suburban rail network) direction "Saint-Rémy les Chevreuses"
  
  • Note: Before boarding the train, verify on the station displays present above the platforms you’re your train will be stopping at the "Le Guichet" station
    
• Take the train to the "Le Guichet" station and exit
  
• Following the rue Charles de Gaulle, walk until you reach number 18 on your left (about 3 min)
  
• Turn into the driveway (to the right of the entrance to the residential building) and walk down the driveway to reach Imagine Optic's building