New Orleans theorized solution

[IowaSF]

The "clock face" is not really a clock at all. They clock hands are in fact an anchor meeting sextant arms. The clock face is the fully encircled arms of the sextant. Preservation Hall should be at due north (noon) when you have enough information to draw your circle.

"In the middle of 21 from end to end, only 3 stand watch" - I believe 21 units is the diameter of the outer circle. The middle of the circle being Lafayette Square, 10.5 units from Preservation Hall. Turn your map so that PH is due north and LS is in the middle. Draw a line from PH to LS

"15 rows down to the ground" - This is directing you to the horizon. Each row on a sextant is 6 degrees. 15 rows is 90 degrees. If you look at a map of NO centered on LS, the horizon (where water meets land) looks like Poydras St when comparing to the image.

The verse lines that have been identified as Royal St. Charles Hotel are telling you that a line drawn from LS to our "celestial object" (casque) intersecting the outer circle intersects the inner circle or horizon mirror there.

Having done some eyeball calculations, it looks like continuing to draw that line to its termination on the outer circle will have it intersect somewhere between Louis Armstrong Park and St. Louis Cemetery #1, where Marie Laveau is buried.

Look at your map. as you have it turned, the area from Stl #1 through Louis Armstrong Park looks like the Werewolf arm holding the white face mask.

The 2 different shades of blue fill in the arch is the sun, moon and stars and sky/water. It is your clue, along with the "clock hands", that the image is a sextant and the verse is directing you how to find your "celestial object".

A first round of sextant calculations using the information from the verse puts the location at roughly St. Louis and N. Rampart.
A block down at Conti and N. Rampart you encounter this:

http://www.aviewoncities.com/img/neworl ... 10815s.jpg

Looking at the image, I would guess the casque is buried directly across from the center entrance of the church, right in front of the historic monument sign in the median.

"Namesakes meeting near this site" would be the International Shrine of St. Jude (Our Lady of Guadalupe) and the St. Jude Community Center right across the street.
The bad news is that so much reconstruction has been done on that road in the last 35 years, it's highly unlikely it would still be there or intact if this is the site.