Lisbon

 Lisbon is an interesting navigation challenge.  This is the most complex find your way city I have ever been to including Venice.  We went from the National Pantheon to the Castle of St George and down to the Main Square.  The route has complex switch backs, with dangerous cobblestones jutting at all angles.  A hidden twisting tram route cuts through all obstacles and don't get in the way. The castle is always above you somewhere but you can't see it unless you are in the right street.
 Another navigation feat was demonstrated proving that motivation conquers all. Prior to the trip I thought the Pandora bracelet was full, however with some squeezing and rearranging, new trinkets can be added.  With an unerring skill that Vasco Da Gama would have been proud of (we saw his tomb in the pantheon), Debbie found her way through the commercial district, past a train station, through heat infested crowds, up some steep streets to emerge into a shopping centre with a Pandora store.

Pantheon