We’ve come a long way since the emergence of the 17th-century ‘Grand Tour,’ when the wealthy (mostly Brits) finished their education with a real year in the world, learning to fence in Paris, studying art in Florence, climbing the Swiss Alps, and complaining about the service in Athens.Over time, the first-timer traveler’s trails across Europe have swayed back’n'forth, with changes ushered in by the advent of trains, Mark Twain’s ‘is he dead?’ jokes, and the rising or falling of an Iron Curtain or two.So, what is the ‘Grand Tour’ version of today?...