More than just temple ruins,Â Angkor is in fact an entire region of Cambodia, which served as the seat of the Khmer Empire. Flourishing from the 9th to 15th centuries it was the largest preindustrial city in the world, with anÂ elaborateÂ infrastructure connecting a sprawl of almost 400 square miles to the well-known temples at its core. Those temples, buried amid forests and farmlands, number over a thousand – from piles of brick rubble unearthed in rice paddies to the magnificently restored Angkor Wat, the largest religious monument in the world. Followers of this blog will note the similarities Angkor Wat shares in design – if not scale – withÂ Wat Chaiwatthanaram in Ayutthaya. Both follow the basic plans of Khmer architecture: a temple mountain (“Mount Meru”) bounded by raised rectangular galleries, all within a moat and an outer wall – and all richly ornamented with decorative elements and statuary. Built in the first half of the 12th century, Angkor WatÂ is even more unusual in that although the site was neglected it has never been completely abandoned, remaining a significant religious centre throughÂ HinduÂ thenÂ Buddhist kingdoms, colonialism, and civil war – its preservation abetted by the expansive moat which kept theÂ encroachingÂ jungle at bay.