This Zoroastrian site is excellent and provides a view into the PRE-islamic history of Iran and the Monarchs who ruled the region from some 6,372 years ago and 2,572 since King Cyrus the Great (Koorosh), who formulated the first Declaration of Human Rights.
The REAL IRAN, not the one the Mullahs have formulated and I call "islamic iran" without capitalization of both words.
Neither is what the Mullahs practise and preach not "Islam" - nor is the current country they control oppressively "Iran" in my mind.
Any insult is not to visitors but to the iranian Mullahs who are proponents of Arabic not Persian civilization and are invading "Taazis".
And many have doubts as to what the Arab "civilization" might be when their history is largely based on the most violent teachings of the Koran, slavery, rape, disrespect of women and death as expounded some 1,400 years ago. And the jihadists wish to impose on all of us today as Sharia regulations.
In fact modern society laws punish much of what is encouraged (and often practised in Moslem countries today) in the Koran just as it would punish us for Old Testament "eye for an eye, tooth for a tooth" outdated societal mores.
So Persians or Iranians should bear this in mind and realize what passes for the islamic regime of the Mullahs does not qualify as (capitalized) Islam nor as Iran.