Wat Phra Si Sanphet

Three brick chedis mark the site of Ayutthaya’s royal temple, built inside the old palace compound in the late 15th century to hold the ashes of three kings. Wat Phra Si Sanphet had no resident monks — it functioned purely as the private chapel for the kings who lived in the adjoining Wang Luang palace, now itself reduced to foundations. Entry is 50 THB for foreign visitors and 10 THB for Thai nationals, daily 08:30–17:00, inside Ayutthaya Historical Park.

The temple takes its name from a 16-metre standing Buddha, cast in bronze and sheathed in roughly 343 kg of gold, which stood at the site’s centre until 1767. That’s when Burmese forces sacked the city and stripped the gold; the bronze core survived and was later moved to Bangkok, where it’s now enshrined in a chedi at Wat Pho. The three surviving chedis — restored, not original in every course of brick — still dominate the platform, each built to enshrine the remains of a 15th- or early 16th-century Ayutthaya king. Between them lie the foundations of viharas and ordination halls, low brick walls now, where wooden roofs and murals once stood. There’s a fourth, smaller chedi off to one side, added later for a fourth royal burial. Early morning is worth the effort: the platform gets full sun with almost no shade cover, and the red brick photographs far better in low, angled light than at midday.

Insider Tip: Buy the 220 THB combined ticket at this temple’s booth rather than paying 50 THB per site — it also covers Wat Mahathat and Wat Ratchaburana next door, both worth 30 minutes each, plus three further sites across the historical park, and it’s valid for 30 days.

Watch out: There’s almost no shade on the chedi platform. Bring water and a hat — the exposed brick radiates heat back at you by midday, especially March–May.

The ruins sit flat, walkable, and well-signed, with paths connecting directly to Wat Mahathat and Wat Ratchaburana a few minutes away by bike or tuk-tuk — most visitors do all three in a single loop. Wat Borom Phuttharam, just outside the paid historical park zone, is free and a short ride further out if you want a quieter, less-visited contrast.