I'm not sure if Sally Potter and her beautiful film The Tango Lesson were responsible or whether it's more indicative of a larger tendency in travel - to travel to learn - but the trend of foreigners travelling to Buenos Aires to take tango lessons is so extraordinary it constitutes a phenomenon. The dance has also enjoyed a revival among locals. Walk down any of San Telmo's streets in the early evening and glance through a door and you're guaranteed to see a traveller, young or old, in jeans and t-shirts, taking lessons from a dapper old gentleman in jacket and tie or a distinguished woman, her black hair pulled back into a ballerina's bun. There are tango schools all over the city and private lessons posted on notice boards at hostels and supermarkets. Hotels such as the wonderful Mansion Dandi Royal offer tango packages including lessons in their own tango salon. The most popular place to learn is in the splendid Confiteria Ideal, a faded old café with an atmospheric dance hall upstairs which operates classes day and night, followed by a milonga, or social dance, where you get to practice with the locals. You can read more about experiencing tango in our new book Buenos Aires Encounter, but what most fascinates me is the flourishing trend of experiential travel. Travellers want to educate their minds and stimulate their senses. Cooking courses in Tuscany. Arabic lessons in Damascus. Elephant trekking in Thailand. Wine-making in Napa. Travel choices increasingly seem to be as much about what to do as where to go. As the slogan of adventure and experiential tour operator iExplore says, people want to "come back different", while i-to-i, a site that offers volunteering experiences, teaching opportunities and community projects abroad, is all about "meaningful travel". I'm not so sure you need to do an organized activity or tour to fully experience a place. You can sign up for a course in something when you arrive. The important thing is to just go. Figure out what to do when you get there.