Why the ruins look the way they do

This was one of the largest cities in the world in its day, a river-island capital of temples and palaces, and it was sacked and burned in 1767. What survives is deliberately preserved as ruins rather than reconstructed, which is part of why UNESCO inscribed it for bearing witness to a period of Thai artistic development.

Knowing that changes what you look at. The headless Buddha images and the shells of prangs are not neglect; they are the event itself, left visible.

Getting there

The trip north from Bangkok is short by Thai standards, and there are several ways to make it: intercity trains, road transport, and organised tours that usually combine the ruins with a river element. Bangkok's rail hub has shifted in recent years, with Krung Thep Aphiwat Central Terminal now the operating hub for the SRT's electrified Red Line network, so check which station your specific train uses when you book rather than relying on an older guide.

Whichever way you go, the timing principle is the same: leave early. An 08:00 arrival gives you two good hours before the heat becomes the main character of the day.

Planning the day among the ruins

The sites are spread across a wide area and walking between all of them in the middle of the day is a mistake people make once. Hire a bicycle if you are visiting in cooler months, or arrange a driver by the hour, and treat the middle of the day as a break rather than a gap in your sightseeing.

A workable shape looks like this.

What to bring

Sun protection is not optional here. There is minimal shade among the ruins, the brick radiates heat, and the walk between sites is exposed. A hat, sunscreen, more water than you think and light long sleeves will do more for your day than anything else.

Dress as you would for a temple: shoulders and knees covered. These are religious sites as well as archaeological ones, and some are still active.

If you have more time

Ayutthaya rewards an overnight stay far more than most day-trip destinations, because the ruins at dawn and at dusk are a different experience from the ruins at noon, and because the pressure to see everything before the last train disappears. If your schedule allows one night outside Bangkok, this is a strong candidate for it.