The Vatican Museums are free to visit on the last Sunday of every month from 09:00 to 14:00. However, the queues can be gargantuan, with wait times running into the hours:
We will be in Rome on the last Sunday of October. At that time of the year, how early should we show up at the Vatican Museums to avoid having to wait in line for the free admission?
Photo credit: DAVID ILIFF. License: CC-BY-SA 3.0.