On 15 june 2006 a govt.comitte had declared that the 7.4km radius around Taj mahal is a no fly zone its perhaps because of the security reasons . read more
It's forbidden because in Hindu culture, nothing may ever go over anything (Like, you cannot build a bridge over another road). This is because (roughly) the spirits cannot be blocked from their path to heaven. read more
Is it true that any aircraft is forbidden to fly over Taj Mahal - trivia question /questions answer / answers read more