A proven kid-pleaser, EUR's most impressive museum was founded by Mussolini in 1937 to glorify Imperial Rome. A hulking place with huge echoing halls, it contains a number of intriguing displays. The best is a giant-scale re-creation of 4th-century Rome, but there are also detailed models of the city's main buildings, an absorbing cross-section of the Colosseum and casts of the reliefs on the Colonna di Traiano.
For something completely different, learn about the night sky at the on-site Museo Astronomico (Astronomy Museum; 06 820 59 127), complete with its own planetarium. You'll need to book for the planetarium shows.
