When was this structure built?
co-strui-TA — stress on final syllable of 'costruita'. The passive form uses 'è stata' + past participle.
Ask a guide or read from a sign when you want historical dating information. A fundamental question at any ruin. Also useful when there are multiple construction phases visible.
The passive form 'è stata costruita' (was built) is essential for discussing historical monuments. Italian uses the passive more naturally than English in formal/historical contexts. Alternative active constructions like 'i Romani la costruirono' (the Romans built it) are equally correct.
Risale a quale epoca?
Which era does it date back to?
'Risalire a' = to date back to. Very common in historical contexts.
Di quale periodo è?
What period is it from?
Simpler alternative — asks for the historical period.
Quanti anni ha questa rovina?
How old is this ruin?
Direct age question — natural in casual conversation.
Italians refer to historical eras using: 'a.C.' (avanti Cristo = BC) and 'd.C.' (dopo Cristo = AD). 'L'epoca romana' = Roman era; 'l'epoca imperiale' = Imperial era; 'l'antichità' = antiquity in general.