ប្រាសាទអកយំស្ថិតនៅចុងផុតខាងត្បូងនៃបារាយណ៍ខាងលិច។ប្រាសាទនេះកសាងឡើងក្នុងរវាងសត្សរ៍ទី៧និងទី៩។សីលាលាចារិកដែលរកឃើញនៅលើសសរបញ្ជាក់ប្រាប់ពីការបរីច្ឆេទនៃប្រាសាទអកយមគឺ ឆ្នាំ៦០៩៧០៤និង១០០១។ ក្នុងពេលកសាងបារាយណ៍ខាងកើតផ្នែកខ្លះនៃប្រាសាទនេះត្រូវបានកប់ដោយទំនប់ខាងត្បូង។ ប្រសាតយនេះមានបីជាន់ មានប្រាង្គចំនួន១២ និងព័ទ្ធដោយជញ្ជាំងធ្វើពីឥដ្ឋ។
Ak Yum temple is located southern end of West Baray. The temple was built between 7 and 9 centuries. The inscriptions found on pillars give the date of AD 609, 704, and 1001 from Ak Yum temple. Evidence of a lingam and some sacred depository has also been found. During the construction of the West Baray, this site was partially buried by the south levee of the Baray. The temple was built on their level standing on the platform and enclosed by a brick with sandstone bays. Four shrines occupied the corners of the second tier and two others stood on each side, making a total of twelve shrines. The central sanctuary was on the uppermost tier and opened to the east with false doors on the other three sides. Post holes are still visible and were probably used to support a wooden framework for the monument.
