Reason: The Taj Mahal is an iconic example of Mughal architecture and one of the most well known buildings in the world. * * *. The Taj Mahal is widely considered one of the most beautiful buildings ever created.The exquisite marble structure in Agra, India, is a mausoleum, an enduring monument to the love of a husband for his favorite wife. It's also an eternal testament to the artistic and scientific accomplishments of a wealthy empire.eason: The Taj Mahal is an iconic example of Mughal architecture and one of the most well known buildings in the world. * * *. The Taj Mahal is widely considered one of the most beautiful buildings ever created.