Spend your morning exploring the impressive ruins of Prasat Hin Phimai, a beautifully preserved 10th century temple compound founded by Cambodia's King Suriyavaraman I. This stunning sacred sanctuary combines Hindu and Mahayana Buddhist elements. With well-preserved carvings and superbly proportioned structures, Phimai remains energized with the power to awe. This major center of Khmer/Thai trade was once connected to Angkor by an astoundingly straight laterite highway. Have lunch in the shady compound of Sai Ngam, Thailand's largest banyan tree and home of powerful animist spirits. We recommend the peppery rice noodles served up fresh from sizzling woks. Afterwards, wander through the Phimai National Museum, repository of the finest statues and carvings from the province's many Khmer temples, including gold offerings and ornaments that once decorated the primary sculptures.

Start your return trip to Bangkok around 3pm, or extend your stay one more night and visit the astounding hilltop palace of Phnom Rung tomorrow.

Those who opt for the three-day stay may continue exploring the Korat vicinity for the remainder of the afternoon. Nearby Ban Prasat is home of the oldest archeological digs in the province. Excavation pits are open for view, offering burial displays and pottery. Prasat Phanomwan, is another major Khmer ruin, a Hindu temple now used for Buddhist worship. The old town of Dan Kwian, south of Korat, is famous for its terracotta pottery. Overnight again in Korat.

Depart as early as possible for the province of Buriram, home to 140+ ancient city sites underscoring its important position in the Khmer empire. Phnom Rung, the largest and best-restored Khmer compound in Thailand, is certainly also the most dramatic -- perched on top of an extinct volcanic cone with spectacular views across the flat countryside and even into Cambodia. Arriving early, you'll beat the crowds, enjoy the cooler temperatures, and view the ruins in ideal lighting conditions. Ascend its spectacular stepped promenade, guarded by 16 multi-headed naga serpents identical to those at Angkor. The main hall and its galleries were constructed during the golden age of Khmer artistic prowess. Phnom Rung's superb artistry, and its sensational geographic setting, have combined to create a sublime emulation of paradise.