This is how to visit all seven modern wonders of the world – from monumental landmarks to great feats of innovation and cultural heritage Sign up to Simon Calder’s free travel email for expert advice and money-saving discounts Get Simon Calder’s Travel email Get Simon Calder’s Travel email Email * SIGN UP I would like to be emailed about offers, events and updates from The Independent. Read our Privacy notice You may have read about the seven ancient wonders of the world, some of the planet’s