Prominent investigators of Issyk Kul and the Tien Shan, for example V.V. Sapozhnikov, A.N. Krasnov, I.V. Ignatov, D.I. Mushketov, V.I. Lipsky, worked in Karakol for a long time. Quite often the guests of the city were foreign scientists. For example, four times (1892, 1902, 1907 and 1908) the Austrian professor G. Merzbacher visited here. A lake in Khan-Tengri is named after him. In 1895 a French expedition went there, led by Shaffangjon with the participation of the botanist Ge and the zoologist Monzheni, Hungarian zoologist G. Almashi, American E. Hentington and others.