Ta Som is a small temple located in the east of Nean Pean. It was built in the 12th century to commemorate the father of the king (Buddhist). The structure of this temple has the features of Bayon style. Ta Som is a single tower surrounded by three enclosing walls. The enclosure is made of lateritestones and carved with four faces on its entries. These entries have shaped as a cross. And the east entrance is the only way to access the temple. Entering the temple by a porch entry over the causeway with serpents and large Garudas, you will cross a moat. After that, you can see a laterite and sandstone gallery.
There were also two libraries at the west which are now under the stone crumbled piles.