This is a compilation of 17 Italy Guinness records in Unknown date. You may want to take a look at our complete list of Italy Guinness Records broken down by year.
| When | Record name | What | Who |
|---|---|---|---|
| Greatest tree girth ever | Castanea sativa | ||
| Largest cazöla | 931.46 kilogram(s) | Sergio Garavaglia | |
| Fastest completion of Picross DS: Normal Mode – Catch | Michele Magnaterra | ||
| Largest amphitheatre | Colosseum | ||
| Smallest region | 3262 square kilometre(s) | Val d'Aosta | |
| First stigmatic priest | first | Padre Pio | |
| Oldest cultivated decorative plant | Rose | ||
| Not applicable | Longest record of volcanic eruptions | 3,516 year(s) | Mt Etna |
| 499 | Oldest irrational number | first | Unknown |
| Not applicable | Most expensive fungus | 3,000 US dollar(s) | Tuber magnatum pico |
| First existing advertising | Unknown | ||
| Largest asteroid in the main asteroid belt | 941 kilometre(s) | 1 Ceres | |
| Longest continuously erupting volcano | Mt Stromboli | ||
| First century BC BC | First monumental dome | first first | Temple of Mercury |
| First road maps | first | Ancient Roman road maps | |
| Smallest mint | Sovereign Military Order of Malta | ||
| First known catacombs | first | San Sebastiano ad Catacumbas |