The liberation of Rome after WWII is celebrated on 25 April every year.
Rome was liberated by US soldiers from the 5th Army in April 1945, having faced German troops guarding the city. German troops were ordered to withdraw and they capitulated on 2 May.
On 25 April, the Quirinale Palace and other government buildings mark Liberation Day with official ceremonies.
The Liberation Day holiday often extends to Labour Day on 1 May, so Rome is usually busy at this time of year, before the huge rise in tourist numbers during the summer months.