Before the Russians, Turks and Tatars, there were the Romans. During their occupation of this country 2000 years ago, they built the settlement of Aquincum. The maze of ruins at this archaeological site is difficult to make sense of at first: look for the tile signs explaining where the baths, temples and market were. Fanciful mosaics and elaborate gravestones are on display. Inside the museum building is the reconstruction of a Roman-era water organ found here. To reach the museum, take the HÉV (suburban train) from Batthyány tér to the Aquincum stop (an 18-minute ride).