Built between 1638 and 1648 by Emperor Shah Jahan, the Red Fort is considered the pinnacle of Mughal architecture. A sprawling complex of marble palaces, intricate pavilions and landscaped gardens all protected by 18 metre high walls, the unfortunate Shah Jahan was imprisoned by his own son before he could take up residence and enjoy his paradisiacal vision. The last Mughal emperor was forced to leave in 1857 – today many of the buildings now house interesting museums and the grounds are just as delightful.