Currently the closest example is Singapore[0], but they have much more central control than what a Georgist would find ideal. 99 year leases are far to long, and shorter leases would have much more beneficial effects.
Detroit was an example of a city that massively expanded[1] because of it, but eventually lost it's way.
Harrison, PA[2] is an example of a city that 'recently' used a revenue neutral split-rate system to keep from going bankrupt.
