On the other hand, don't take the 3.5 hour guided tour of Palermo and the other old, rich districts of Buenos Airies.

This is the most *boring* city tour I've ever been on in my life. It's pretty much the equivalent of a guided walk from Knightsbridge to Marble Arch via Hyde Park and scenic strolls along Park Lane. Nothing but expensive apartments, civic parks and ugly 19th century statues.