9The next day, as they were on their journey and approaching the city, Peter went up on the housetop about the sixth hour to pray.
Roofs were common places of prayer (see 2 Kings 23:13; Jeremiah 19:13; Zephaniah 1:5),1 most likely because one had to go outside the house in order to get up to the roof and thus it was a place of quiet and seclusion.2
9 The next day, as they were on their journey and approaching the city, Peter went up on the housetop about the sixth hour to pray.