Heavenly Carpet of Citadels

Software: Ultra Fractal 6.
Formula: The standard Mandelbrot set.
 
For location and the huge magnification, read the parameter file below (if you don't have UF)

HeavenlyCarpetOfCitadels {
fractal:
  title="Heavenly Carpet of Citadels" width=800 height=600 layers=1
  credits="Ingvar Kullberg;11/1/2017"
layer:
  caption="Layer 1" opacity=100 method=multipass
mapping:
  center=-1.7489401997069740335947622711800407949091578355086917863627\
  49476419994119717591884467343318552118957679250426543432859987306016\
  3719790647343392918756491921092419637395/3.6584915083830932306648872\
  09146966673878326938882180361317306943837634257305801788650006172730\
  97623254433328687224122672706261669947757094736297769034219950738289\
  21675e-6 magn=1.1474049E156
formula:
  maxiter=1000000 percheck=off filename="Standard.ufm"
  entry="Mandelbrot" p_start=0/0 p_power=2/0 p_bailout=100
inside:
  transfer=none
outside:
  density=0.25 transfer=linear filename="sp.ucl" entry="Basic2"
  p_up=0.0 p_down=0.0 p_lp=2.0 p_lk=1.0 p_noblurr=no p_p=1.0 p_k=0.01
  p_hightrap=0.0 p_lowtrap=0.0 p_mask=no p_solid=yes p_colindex=0.0
gradient:
  smooth=yes rotation=-119 index=75 color=16644095 index=129
  color=10350079 index=224 color=219135 index=-110 color=1512992
  index=-79 color=15794175 index=-72 color=1910049
opacity:
  smooth=no index=0 opacity=255
}