Skip the queues at the Colosseum for a day and point yourself north. About 80 minutes by car from Rome, in the hills of Lazio, Tarquinia packs a millennium of history into a town you can comfortably cover on foot in a few hours — and hardly anyone outside Italy seems to know about it.

Tarquinia's story starts before Rome existed. It was a major centre of the Etruscan civilisation, flourishing around 600 B.C. before Rome absorbed the city in the third century B.C. The best evidence of that vanished world sits just outside town at the Monterozzi necropolis, a UNESCO-listed hillside holding more than 6,000 rock-cut tombs. Around 200 of the burial chambers are frescoed with scenes of banquets, dancing and hunting, and 22 are open to visitors. Highlights include the Tomb of the Leopards, with its lively banquet scene, and the eerie Tomb of the Blue Demons, whose blue-skinned figures hint at Etruscan ideas about the underworld. Tickets can be bought online, and entry is free on the first Sunday of each month.

Fifteen minutes' walk away, the National Archaeological Museum of Tarquinia displays the necropolis's excavated treasures — sarcophagi, Greek vases and the striking terracotta "Winged Horses" salvaged from an Etruscan temple — inside Palazzo Vitelleschi, a handsome early-Renaissance palace. Handy detail: one admission ticket covers both the museum and the necropolis.

The town itself is a medieval pleasure. Walls dating from the 9th to 12th centuries ring the hilltop, and you can walk sections of them for views out to the sea. Near the Barriera San Giusto gate, the 13th-century Palazzo Comunale has a frescoed hall worth a peek. The whole site — necropolis to the Fontana Nova fountain on the far side of town — is a 25-minute walk, so no car needed once you arrive. Piazza Giacomo Matteotti is the central spot for a coffee or aperitivo: L'Angolo Del Caffè scores well on Google Maps, and Belle Hélène, a French-style patisserie by the square, does handmade croissants worth the detour.

For travellers based in Rome who want depth without the crowds, Tarquinia is close to ideal: you get pre-Roman archaeology, UNESCO-listed art, a walkable medieval centre and coastal views, all before heading back to the capital in time for a rooftop drink. Tarquinia is quiet at night, so plan it as a day trip rather than an overnight — though that's precisely what keeps it peaceful.