Nehemiah 2:14

Overview - Nehemiah 2
Artaxerxes, understanding the cause of Nehemiah's sadness, sends him with letters and commission to Jerusalem.
Nehemiah, to the grief of the enemies, comes to Jerusalem.
12 He views secretly the ruins of the walls.
17 He incites the Jews to build.
Treasury of Scripture Knowledge

Nehemiah 2:14  (King James Version)
Then I went on to the gate of the fountain, and to the king's pool: but there was no place for the beast that was under me to pass.

the gate of the fountain
The gate leading either to the fountain of Siloam, on the east of the city, or to that of Gihon, on the west.
3:15 2 Kings 18:17 ; 20:20 2 Chronicles 32:30

the king's pool
Probably the aqueduct made by Hezekiah to bring the waters of Gihon to the city of David.