Many of the wonderful travel books for children in the Pollard Collection, housed at Trinity College Dublin, are also available to read through various free online sources. Here are a few of the ones I’ve consulted recently:
Scenes in Asia for Little Tarry at Home Travellers
by the Rev Isaac Taylor, 3rd edition, 1822 here
The Ship:
a description of different kinds of vessels, the origin of ship building,
a brief sketch of naval affairs, with the distinctive flags of different nations,
by the Rev Isaac Taylor here
Tales of the North American Indians and Adventures of the Early American Settlers
by Barbara Hawes, 1844 edition here
Thiodolf the Icelander 
by Baron La Motte-Fouque, 1862? (translated from German) here
Three Months Under the Snow: The journal of a young inhabitant of the Jura by JJ Porchat. translated from French, 1855 here
Three Vassar Girls in Italy
by Lizzie W. Champney. Boston: Estes & Lauriat, 1886 here
A Tour to Great St Bernard’s and round Mont Blanc, by William Rose, London 1827 here
The Traveller, or An Entertaining Journey Round the Habitable Globe
Travels in Africa by Mungo Park here
Tarry at home - and travel in books! 