First trip to Europe. First visiting a friend in Prague, then tooling around France with a pair of friends (Paris, Chamonix and Marseille), before ending up in Barcelona. The return trip features a midnight visit to Times Square, during a layover.
Tons of flying during my first trip to South America. Flying from Seattle to Santiago (via DC and Sao Paulo). Then, with a friend (and 2 of her friends), overland to Mendoza. Then a flight to Buenos Aires. Ferry to Colonia del Sacramento and back. Another flight to Iguazu Falls. Then back the way I came, via a bunch of flights.