Dabaotai Xi Han Dynasty Tomb Museum 大葆台西汉墓博物馆

This tomb of a Western Han Dynasty feudal prince offers a rare glimpse of funerary customs 2,000 years ago. Over 1,000 articles were unearthed here following the Western Han penchant for ceramic funerary that was modeled after everyday items. Also unearthed were three whole carriages and 11 horses. To be fair, it's not Beijing's most glamorous museum, and it is kind of a trek to get out there, but if you're really into archaeology, then this might just be the site you've been looking for.