From 1167 the residents of Tusculum moved to the neighbours (Locus) or little villages as Monte Porzio Catone, Grottaferrata and mostly to Frascati: only a little group of defence troops remained in the old city.

When in 1183 the Roman army again attacked Tusculum, Barbarossa sent a new contingent of troops to its defence.
The Commune of Rome was however able to destroy the town on 17 April 1191 with the consent of Pope Celestine III and the consent of Henry VI, Holy Roman Emperor, son of Frederick Barbarossa.

Roger of Hoveden wrote "lapis supra lapidem non remansit" (not a stone upon a stone remained), indeed the Roman Commune's army took away the stones of the walls of Tusculum as spoils of war in Rome.

After destruction the land of Tusculum city became woodland and pasture lands.
The buildings destroyed in Tusculum became a big open quarry of materials for the inhabitants of the neighbouring towns of the Alban Hills.

In 1806 the first campaign of archaeological excavation on the top of the Tuscolo hill was begun by Lucien Bonaparte.
In 1825 the archaeologist Luigi Biondi excavated to find out Tusculum, engaged by Queen Maria Cristina of Bourbon, wife of Charles Felix of Sardinia.
In 1839 and 1840 the architect and archaeologist Luigi Canina, called by the same royal family, excavated the Theatre area of Tusculum.
The ancient works of art excavated were sent to Savoy Castle of Agliè in Piedmont.

In 1825 Lucien Bonaparte found the so-called Tusculum portrait of Julius Caesar at the city's forum.

In 1890 Thomas Ashby arrived to Rome as Director of the British School in Rome.
He was an expert of ancient monuments topography and studied the Tusculum monuments, reporting the results in The Roman Campagna in Classical Times published in London in 1927.

In 1955 and 1956 the archaeologist Maurizio Borda excavated a necropolis with cinerary urns.

From 1994 to 1999 was held the last excavation campaigns of archaeologist Xavier Dupré and his staff undertaken by Escuela Espanola de Historia y Arqueologia en Roma.
From 1167 the residents of Tusculum moved to the neighbours (Locus) or little villages as Monte Porzio Catone, Grottaferrata and mostly to Frascati: only a little group of defence troops remained in the old city.
When in 1183 the Roman army again attacked Tusculum, Barbarossa sent a new contingent of troops to its defence. The Commune of Rome was however able to destroy the town on 17 April 1191 with the consent of Pope Celestine III and the consent of Henry VI, Holy Roman Emperor, son of Frederick Barbarossa.
Roger of Hoveden wrote "lapis supra lapidem non remansit" (not a stone upon a stone remained), indeed the Roman Commune's army took away the stones of the walls of Tusculum as spoils of war in Rome.
After destruction the land of Tusculum city became woodland and pasture lands. The buildings destroyed in Tusculum became a big open quarry of materials for the inhabitants of the neighbouring towns of the Alban Hills.
In 1806 the first campaign of archaeological excavation on the top of the Tuscolo hill was begun by Lucien Bonaparte. In 1825 the archaeologist Luigi Biondi excavated to find out Tusculum, engaged by Queen Maria Cristina of Bourbon, wife of Charles Felix of Sardinia. In 1839 and 1840 the architect and archaeologist Luigi Canina, called by the same royal family, excavated the Theatre area of Tusculum. The ancient works of art excavated were sent to Savoy Castle of Agliè in Piedmont.
In 1825 Lucien Bonaparte found the so-called Tusculum portrait of Julius Caesar at the city's forum.
In 1890 Thomas Ashby arrived to Rome as Director of the British School in Rome. He was an expert of ancient monuments topography and studied the Tusculum monuments, reporting the results in The Roman Campagna in Classical Times published in London in 1927.
In 1955 and 1956 the archaeologist Maurizio Borda excavated a necropolis with cinerary urns.
From 1994 to 1999 was held the last excavation campaigns of archaeologist Xavier Dupré and his staff undertaken by Escuela Espanola de Historia y Arqueologia en Roma.
Tusculum