Gihon

The king said to them, "Take with you the servants of your lord, have Shlomo my son ride on my own mule and bring him down to Gichon.

So Tzadok the cohen, Natan the prophet, B'nayah the son of Y'hoyada and the K'reti and P'leti went down, had Shlomo ride on King David's mule and brought him to Gichon.

and Tzadok the cohen and Natan the prophet anointed him king in Gichon. Then they escorted him back from there rejoicing, so that the city is in an uproar; this is the noise you've been hearing.

It was this same Hizkiyahu who blocked the upper outlet of the Gichon Spring and diverted the water straight down on the west side of the City of David. Hizkiyahu succeeded in all that he did.

After this he built an outer wall for the City of David on the west side of Gichon, in the valley, extending as far as the entrance at the Fish Gate; it encompassed the 'Ofel, and he built it very high. He stationed army commanders in all the fortified cities of Y'hudah.