1st St Ives Scout Hut can be found in the corner of Ayr Field. 

Take the A3074 from Hayle towards St Ives.  Go through Carbis Bay and head down past Tregenna Castle into St Ives town centre.  Go past the train and bus station and around the sharp corner.  Take the next left turn and head up the hill. Just past "Stenneck Surgery" (Old school building) take a right turn up Bullan's Lane.  At the top of this road, turn left.  On your left hand side is Ayr Field, you should be able to see the Scout Hut from here.  You can turn into the field at an entrance level with the Scout Hut.

If you want to use Google Maps for directions, click here!  This will take you to TR26 1ED  - right opposite Ayr Field.