Your&nbsp;day&nbsp;starts&nbsp;before&nbsp;Ayutthaya&nbsp;wakes&nbsp;up.&nbsp;At&nbsp;Wat&nbsp;Ratchaburana,&nbsp;you&#39;ll&nbsp;climb&nbsp;the&nbsp;crumbling&nbsp;steps&nbsp;of&nbsp;a&nbsp;15th-century&nbsp;prang&nbsp;and&nbsp;duck&nbsp;down&nbsp;into&nbsp;a&nbsp;burial&nbsp;vault&nbsp;where&nbsp;the&nbsp;original&nbsp;frescoes&nbsp;still&nbsp;cling&nbsp;to&nbsp;the&nbsp;walls&nbsp;—&nbsp;a&nbsp;temple&nbsp;built&nbsp;for&nbsp;two&nbsp;princes&nbsp;who&nbsp;killed&nbsp;each&nbsp;other&nbsp;over&nbsp;the&nbsp;throne,&nbsp;and&nbsp;one&nbsp;of&nbsp;the&nbsp;few&nbsp;stops&nbsp;in&nbsp;the&nbsp;city&nbsp;your&nbsp;guide&nbsp;can&nbsp;talk&nbsp;about&nbsp;without&nbsp;reciting&nbsp;a&nbsp;plaque.Cross&nbsp;the&nbsp;road&nbsp;and&nbsp;you&#39;re&nbsp;at&nbsp;Wat&nbsp;Mahathat,&nbsp;home&nbsp;to&nbsp;the&nbsp;single&nbsp;most&nbsp;photographed&nbsp;image&nbsp;in&nbsp;Thailand:&nbsp;a&nbsp;sandstone&nbsp;Buddha&nbsp;head&nbsp;wrapped&nbsp;in&nbsp;banyan&nbsp;roots&nbsp;that&nbsp;grew&nbsp;together&nbsp;over&nbsp;centuries.&nbsp;It&#39;s&nbsp;the&nbsp;spot&nbsp;that&nbsp;sent&nbsp;BLACKPINK&#39;s&nbsp;Lisa&nbsp;viral&nbsp;a&nbsp;few&nbsp;years&nbsp;back,&nbsp;and&nbsp;it&nbsp;still&nbsp;stops&nbsp;every&nbsp;visitor&nbsp;mid-step.&nbsp;From&nbsp;there,&nbsp;Wat&nbsp;Phra&nbsp;Si&nbsp;Sanphet&#39;s&nbsp;three&nbsp;white&nbsp;chedis&nbsp;close&nbsp;out&nbsp;the&nbsp;temple&nbsp;run&nbsp;—&nbsp;the&nbsp;old&nbsp;royal&nbsp;palace&nbsp;grounds,&nbsp;once&nbsp;home&nbsp;to&nbsp;a&nbsp;16-meter&nbsp;gold-covered&nbsp;Buddha.By&nbsp;early&nbsp;afternoon&nbsp;you&#39;re&nbsp;heading&nbsp;east&nbsp;to&nbsp;Khao&nbsp;Yai,&nbsp;Thailand&#39;s&nbsp;oldest&nbsp;national&nbsp;park&nbsp;and&nbsp;a&nbsp;UNESCO&nbsp;World&nbsp;Heritage&nbsp;Site&nbsp;in&nbsp;its&nbsp;own&nbsp;right.&nbsp;Lunch&nbsp;happens&nbsp;at&nbsp;the&nbsp;park&#39;s&nbsp;own&nbsp;food&nbsp;court&nbsp;before&nbsp;you&nbsp;settle&nbsp;into&nbsp;Lam&nbsp;Takong&nbsp;campsite,&nbsp;where&nbsp;sambar&nbsp;deer&nbsp;and&nbsp;barking&nbsp;deer&nbsp;wade&nbsp;the&nbsp;riverbank&nbsp;without&nbsp;a&nbsp;fence&nbsp;in&nbsp;sight,&nbsp;monitor&nbsp;lizards&nbsp;the&nbsp;length&nbsp;of&nbsp;a&nbsp;car&nbsp;sun&nbsp;themselves&nbsp;on&nbsp;the&nbsp;banks,&nbsp;and&nbsp;gibbons&nbsp;swing&nbsp;loose&nbsp;through&nbsp;the&nbsp;canopy&nbsp;overhead.From&nbsp;there,&nbsp;your&nbsp;guide&nbsp;drives&nbsp;the&nbsp;park&nbsp;roads&nbsp;during&nbsp;peak&nbsp;wildlife&nbsp;hours,&nbsp;when&nbsp;elephants,&nbsp;wild&nbsp;boar,&nbsp;hornbills&nbsp;and&nbsp;macaques&nbsp;are&nbsp;most&nbsp;likely&nbsp;to&nbsp;cross&nbsp;your&nbsp;path,&nbsp;before&nbsp;angling&nbsp;toward&nbsp;the&nbsp;day&#39;s&nbsp;finale.The&nbsp;day&nbsp;saves&nbsp;its&nbsp;best&nbsp;for&nbsp;last.&nbsp;As&nbsp;the&nbsp;sun&nbsp;drops,&nbsp;you&#39;ll&nbsp;post&nbsp;up&nbsp;outside&nbsp;Khao&nbsp;Luk&nbsp;Chang&nbsp;cave&nbsp;and&nbsp;watch&nbsp;millions&nbsp;of&nbsp;wrinkle-lipped&nbsp;bats&nbsp;stream&nbsp;out&nbsp;in&nbsp;a&nbsp;single&nbsp;unbroken&nbsp;ribbon&nbsp;against&nbsp;the&nbsp;sunset&nbsp;—&nbsp;a&nbsp;two-hour&nbsp;spectacle&nbsp;most&nbsp;Bangkok&nbsp;day&nbsp;trips&nbsp;miss&nbsp;entirely&nbsp;because&nbsp;they&#39;ve&nbsp;already&nbsp;turned&nbsp;for&nbsp;home.&nbsp;You&nbsp;won&#39;t.You&#39;ll&nbsp;roll&nbsp;back&nbsp;into&nbsp;Bangkok&nbsp;after&nbsp;dark,&nbsp;having&nbsp;covered&nbsp;two&nbsp;UNESCO&nbsp;sites&nbsp;and&nbsp;one&nbsp;of&nbsp;Southeast&nbsp;Asia&#39;s&nbsp;most&nbsp;overlooked&nbsp;wildlife&nbsp;events&nbsp;—&nbsp;all&nbsp;led&nbsp;by&nbsp;a&nbsp;local&nbsp;guide,&nbsp;in&nbsp;a&nbsp;carbon-neutral&nbsp;vehicle,&nbsp;on&nbsp;a&nbsp;day&nbsp;built&nbsp;to&nbsp;leave&nbsp;nothing&nbsp;out.

Thailand

Explore&nbsp;three&nbsp;Ayutthaya&nbsp;temples&nbsp;and&nbsp;Khao&nbsp;Yai&nbsp;wildlife&nbsp;by&nbsp;day,&nbsp;then&nbsp;watch&nbsp;millions&nbsp;of&nbsp;bats&nbsp;stream&nbsp;into&nbsp;the&nbsp;sunset&nbsp;—&nbsp;a&nbsp;finale&nbsp;no&nbsp;other&nbsp;Bangkok&nbsp;day&nbsp;trip&nbsp;offers.