Walking tours, don’t you know, may be the best way to see the world. The pace is slow, the better to take in all the new sights and sounds around you. You can savor the landscape, the architecture, and the people you encounter, just as you delight in the food and wine that invariably follows a day on foot. There are no crowds, no lines, no delays. Just a quieter way to travel. Here are five new walking trips for 2024 — in Scotland, Croatia, Spain, the Canadian Rockies and the French Alps — all terrific ways to see the world at a slower pace.