Thomas Cook and his son John Mason Cook were pioneers of the idea of a travel agency to manage tourist holidays. But Thomas Cook was initially motivated by his support of the temperance movement and his deeply held religious beliefs.
Ships were of course carrying cargo for centuries before the idea of carrying passengers in any sort of vacation sense existed. But once the Black Ball line decided to prioritize passenger comfort, the development of the cruise industry began.
Ibn Battuta's 14th-century travels were extensive. He was away from home for roughly 24 years and during that time traveled through virtually every Muslim nation and territory, becoming the traveler of the age.