The Princess Bailun, the wife of the khan, and daughter of the Emperor of Constantinople, was wishing to visit her father, and it was an opportunity not to be lost by Ibn Batuta for exploring Turkey in Europe; he gained permission to accompany the princess, who set out attended by 5000 men, and followed by a portable mosque, which was set up at every place where they stayed. The princess's reception at Constantinople was very magnificent, the bells being rung with such spirit that he says, "even the horizon seemed full of the vibration." The welcome given to the theologian by the princes of the country was worthy of his fame; he remained in the city thirty-six days, so that he was able to study it in all its details. This was a time when communication between the different countries was both dangerous and difficult, and Ibn Batuta was considered a very bold traveller. Egypt, Arabia, Turkey in Asia, the Caucasian provinces had all in turn been explored by him. After such hard work he might well have taken rest and been satisfied with the laurels that he had gained, for he was without doubt the most celebrated traveller of the fourteenth century; but his insatiable passion for travelling remained, and the circle of his explorations was still to widen considerably. On leaving Constantinople, Ibn Batuta went again to Astrakhan, thence crossing the sandy wastes of the present Turkestan, he arrived at Khovarezen, a large populous town, then at Bokhara, half destroyed by the armies of Gengis-Khan. Some time after we hear of him at Samarcand, a religious town which greatly pleased the learned traveller, and then at Balkh which he could not reach without crossing the desert of Khorassan. This town was all in ruins and desolate, for the armies of the barbarians had been there, and Ibn Batuta could not remain in it, but wished to go westward to the frontier of Afghanistan. The mountainous country, near the Hindoo Koosh range, confronted him, but this was no barrier to him, and after great fatigue, which he bore with equal patience and good-humour, he reached the important town of Herat. This was the most westerly point reached by the traveller; he now resolved to change his course for an easterly one, and in going to the extreme limits of Asia, to reach the shores of the Pacific: if he could succeed in this he would pass the bounds of the explorations of the celebrated Marco Polo. He set out, and following the course of the river Kabul and the frontiers of Afghanistan, he came to the Sindhu, the modern Indus, and descended it to its mouth. From the town of Lahore, he went to Delhi, which great and beautiful city had been deserted by its inhabitants, who had fled from the Emperor Mohammed.