Sangat ji,
I found this amazing veechar on the rich symbolism of sri harmindar sahib. Do you know that the two flag posts (nishan sahib) symbolizes miri and piri and the one facing the darbar is sahib is piri (pir-spirituality) and facing Akaal takht is miri (amir-temporal power). The piri one is taller by 4 feet than the miri.
All the facts, about 40 of them are here.
http://snd.sc/1g8Ul58
there are much more veechars in this soundcloud.. intresting..
https://soundcloud.com/gurbaninaad
Gurfateh