Agra, or Akbarabad as it was once called, brings to the mind of a discerning traveller the image of the Taj Mahal. While there's so much more to the city, the marble mausoleum is all that is needed to stand for the idea of India. Once inside its airy compound, visitors jostle to find the perfect corner for pictures or space to sit in the shade of the arches as the summer sun bears down.