BOB Walton still giggles like the cheeky boy he was back in the early 1950s.

In those days, as part of the "Heron Street gang", the now 79-year-old would sneak into the "palatial" (and unoccupied) Rio Vista House with his young mates.

It had been the home of Mildura pioneer family the Chaffeys for six decades until the death of William Benjamin Chaffey's second wife, Hattie, in 1950 when Mildura...