Wat Luang Phrommas is situated in Moo 7, Baan Wat Luang, T. Wat Luang, by the highway No 315 (Phanat Nikhom - Chachoensao), on your righ-hand side.  You take about 700 meters along the sub road to the temple (please see google map below).

This temple was used to hold a ceremony of the water of allegiance in the past.  Also, it has been a dwelling of a thousands of giant bats for hundred years.

Good time to see the bats in the trees: is about 14:00-17:00 hrs.