How to get there - By train, take one from Bangkok's Hualampong station to Ayutthaya. By bus, take one originating from Mo Chit bus station. It will take 1-2 hours of travel to get to the park.
Useful Info: There is a 50 baht park fee for foreigners
Useful info: The Chao Phraya river tourist boat operates from 9:30am to 6:30pm. An all-day pass can be purchased for 150 baht at the Sathorn station, below the BTS station of Saphan Takhsin.
How to Get ThereThe temple complex is located in Phra Nakhon, in the Rattanakosin district of Bangkok. From the Saphan Thaksin BTS station, take the Chao Praya Express boat then get off Tha Tien station. Go through Thai Wang Rd to get to the temple. Be mindful of the scammers near the entrances.The Grand Palace is just next door, so you may visit both landmarks in one go. Tha Tien station is also where you take the boat to Wat Arun (Temple of Dawn).
How to Get There: Wat Arun is located at the Thonburi district of Bangkok. It is accessible through the boats that ply along the Chao Praya river. The Chao Praya River tourist boat, which starts at Sathorn pier (near the Saphan Takhsin station of the Bangkok BTS) is the best bet. Get off at N8 Tien station, then take another boat across the river to reach Wat Arun.
Useful InfoThe tourist boat sells an all day pass for 150 baht, and the boat trip from N8 to Wat Arun costs 3 baht. There are no entrance fees to the temple, but watch out for the scam near the entrance.