Which city did Joshua give to Caleb as his inheritance?

Answer: Hebron

Joshua blessed Caleb and gave him Hebron, because Caleb had wholly followed the LORD, the God of Israel.

“Then Joshua blessed Caleb son of Jephunneh and gave him Hebron as his inheritance. Therefore Hebron belongs to Caleb son of Jephunneh the Kenizzite as an inheritance to this day, because he wholly followed the LORD, the God of Israel.”— Joshua 14:13-14 (BSB)