ferdinand & isabella/columbus

[Kathy Gower]

Hola,

given that yesterday was (formerly) Columbus Day, i got to thinking about
the contributions of Ferdinand and especially Isabella for the Camino...

Can anyone tell me the name of the incredible ediface outside Burgos that
has the many sised monument to Fedinand and Isabella?  It is a many ponted
star shape, intricately carved, and it's name escapes me...

thank you,
k