(Photo: Courtesy of Museo Nazionale Della Scienza E Della Echnologia Leonardo Da Vinci Milan)

When In ...
Rome
Save the date: April 21 is the “Birth of Rome” celebration, which includes fireworks, parades, gladiator shows, and free admission to city-run museums and archaeological sites (Campidoglio and Giardino degli Aranci; 39-068-205-9217).

Milan
Skip the Last Supper; take the kids to the National Museum of Science and Technology for models and reconstructions of Leonardo da Vinci’s machines (€6 per adult, €3 per child; Via San Vittore 21, Milan; 39-024-855-51).

Paris
Through the first week of March, Cirque d’Hiver Bouglione presents “Artistes,” a circus featuring tigers and flying-trapeze acrobatics (€11.50 to €38; 110 Rue Amelot; 33-147-006-235).

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