Jericho.

Joshua 2:1
Then Joshua son of Nun secretly sent two spies from Acacia Grove, saying, "Go, inspect the land, especially Jericho." So they went and entered the house of a prostitute named Rahab and stayed there.

Joshua 6:1
Now Jericho was tightly shut up because of the Israelites--no one went out and no one came in.

Joshua 6:26
At that time Joshua invoked this solemn oath: "Cursed before the LORD is the man who rises up and rebuilds this city, Jericho; at the cost of his firstborn he will lay its foundations; at the cost of his youngest he will set up its gates."

1 Kings 16:34
In Ahab's days, Hiel the Bethelite built Jericho. At the cost of Abiram his firstborn he laid its foundation, and at the cost of Segub his youngest he set up its gates, according to the word the LORD had spoken through Joshua son of Nun.

2 Kings 2:18-22
When they returned to Elisha, who was staying in Jericho, he said to them, "Didn't I tell you not to go?" . . .