Aosta (UK: /ɑːˈɒstə/ ah-OST-ə,[3] US: /ɑːˈɔːstə/ ah-AW-stə,[4] Italian: [aˈɔsta] ⓘ; French: Aoste[a] [ɔst] ⓘ[b]; Arpitan: Aoûta [ˈuta] ⓘ, Veulla [ˈvəla] ⓘ or Ouhta [ˈuhta]; Walser: Augschtal or Ougstal)[c] is the principal city of the Aosta Valley, a bilingual region in the Italian Alps, 110 km (68 mi) north-northwest of Turin.

Aosta was settled in proto-historic times and later became a centre of the Salassi, many of whom were killed or sold into slavery by the Romans in 25 BC.

[6] The campaign was led by Terentius Varro, who then founded the Roman colony of Augusta Praetoria Salassorum, housing 3,000 retired veterans.

After the Congress of Vienna restored the rule of Savoy it was reconstituted and formally recognized by Charles Albert of Sardinia, at the birth of his grandson Prince Amedeo, who was created duke of Aosta.

The ancient town walls of Augusta Prætoria Salassorum are still preserved almost in their entirety, enclosing a rectangle 724 by 572 metres (2,375 by 1,877 ft).

The main road, about 10 metres (33 ft) wide, divides the city into two equal halves, running from east to west.

There are considerable remains of the ancient road from Eporedia (modern Ivrea) to Augusta Praetoria into the Aosta Valley.

Buses connect the city of Aosta to the nearby valleys and to destinations outside the region, including Turin, Milan, Chamonix (France) and Martigny (Switzerland).

Aosta is twinned with:[22][23] L'Aquila, AbruzzoAosta, Aosta ValleyBari, ApuliaPotenza, Basilicata Catanzaro, CalabriaNaples, CampaniaBologna, Emilia-RomagnaTrieste, Friuli-Venezia Giulia Rome, LazioGenoa, LiguriaMilan, LombardyAncona, Marche Campobasso, MoliseTurin, PiedmontCagliari, SardiniaPalermo, Sicily Trento, Trentino-Alto Adige/SüdtirolFlorence, TuscanyPerugia, UmbriaVenice, Veneto