Here are 17 destinations that look especially fetching right now. The list includes cities, countries, islands and national parks on five continents; bohemians and Slovenians; spherical Canadian treehouses; vast Vietnamese caves; train tracks at 14,000 feet; and the mother of all Marimekko stores.
Some of these spots are in the middle of building booms. Some are celebrating historic anniversaries. Some have matured in subtler ways, thanks to tour guides, chefs or hoteliers.
