National Geographic Traveler magazine today announced its annual Tours of a Lifetime selection, now in its 10th year. The 2015 list features 50 of the world’s best guided trips chosen by the editors of National Geographic Traveler. In addition, the editors picked five of their favorite expeditions of a lifetime offered by National Geographic. The list and details about the trips can be viewed in National Geographic Traveler magazine’s May 2015 issue and online at http://travel.nationalgeographic.com/travel/tours/.

“This year marks 10 years of our editors selecting the world’s best guided tours,” said Norie Quintos, acting editor in chief of National Geographic Traveler magazine. “In that time, the types of immersive and experiential trips have only multiplied; tours are going farther and deeper than ever before.”

From stalking lion tracks in the Serengeti to kayaking secret coves in Croatia to following the wine trail in the Republic of Georgia, the 50 best guided tours selected this year offer authentic travel experiences that are sure to leave participants engaged and ensconced in culture. The additional five unique tours from the National Geographic Travel family include inspiring expert-led adventures from Australia to Ireland to the Pacific Islands.