Once one of the world's largest and most cosmopolitan cities, Ayutthaya is now a UNESCO World Heritage park of towering brick prang, headless Buddhas, and temple ruins — a hauntingly beautiful window into Thailand's golden age.

The iconic stone Buddha head entwined in banyan tree roots — perhaps Thailand's most photographed image.

Three restored royal chedi stand in a row at the former grandest temple of the old royal palace.

Rows of weathered seated Buddhas and crumbling stupas line the historic island, best seen by bicycle at golden hour.