If you plan to visit Hua Hin, one of the beautiful beaches of Thailand, I would like to recommend you to include Rajabhakti Park in your travel list. (https://en.wikipedia.org/wiki/Rajabhakti_Park)
Rajabhakti Park is one of the interesting historical places where you can learn about our Thai history as well as admire the awesome statues of 7 ancient Kings of Thailand.
These 7 Kings were famous and great kings in the past from the Sukhothai period until the present monarchy of Chakri.
All statues were made of bronze and they look awesome in large sizes and look outstanding from a far distance.
As you can see each statue of the king has his own and unique posting. If you studied Thai history, you may probably know them very well.
Apart from the awesome statues, I think the scenery of the mountains in the background is picturesque and makes the place more impressive.
The place is clean and decorated beautifully and the surrounding nature is nice.
It's worth visiting indeed.