I had a day to explore Managua and one of my favorite spots was the "Concha Acustica" with its bright Sandinista sunshine and immense plaza. All of the historic buildings - the cathedral, the National Palace, etc - were closed for some undisclosed event (top secret!), so I spent my time outside and loved the vast openness of this plaza and its "concha" which reminded me of Boston's hatch shell where the Pops play. The plaza might fill up for Ortega's political rallies but is otherwise a vast, empty space in a capital that struggles to feel like a city rather than 300 conjoined neighborhoods. If Managua had a center, this would be it.