There are a ton of remains in the city of Capernaum. A church is built around the location of where Peter’s house may have been.
The houses in this city would have had a thatched roof instead of the stone roofs found elsewhere in Israel. This thatched roof was because of the weather and would explain how the men could dig through the roof to lower their paralyzed friend to Jesus without hurting anyone inside the house.
There are more miracles mentioned happening in Capernaum than in any other town.