Two hundred million years ago, prosauropods walked the earth. They left something behind.

© Elio Della Ferrara/Arch. PaleoStelvio (PNS, MSNM, SABAP CO-LC)

Part station, part museum, two new subway stops in Rome offer riders the chance to see ancient artifacts unearthed in digging for the stations.

© Filippo Monteforte/Agence France-Presse — Getty Images