The first town they go to is Jericho where a prostitute named Rahab hides the two spies of Joshua and she is therefore protected when they destroy the town. The wording they use I find kind of creepy:
"The men said to her, 'our life for yours! If you do not tell this business of ours, then we will deal kindly and faithfully with you when the Lord gives us the land.'" (Josh. 2:14)
What struck me as so emotional and tragic about this story is the way Rahab is forced to watch her home and friends and community burn while she survives left with the guilt that possibly she could have saved them. It also seemed incredibly cruel to me that God would force Rahab to go through this and the confusion of being "rewarded" with her life. If looked at from a Feminist critique this character like much of the female characters in the Bible are forced to reap the consequences of male actions. She is a hero to her family but ultimately a villain to her whole town. It's not fair.
Jericho was surrounded by walls. Again the number seven comes up here as Joshua's men, seven priests with seven trumpets on the seventh day will march around the city seven times while they blow the trumpets. After doing this the walls of Jericho fall down.