If anyone is passing through Managua on the 1st or the 10th of August, I highly suggest stopping in to see the famous Santo Domingo festival. There is also a big party inside the Serranitas church on the last night of this month...imagine hundreds of devils partying inside an old cathedral. Yup, people dressed up as devils.
Don't miss Santo Domingo, world famous in Managua. Even if you want to miss it you may have no choice if passing through Managua on the first or the tenth. They close down streets and traffic is a nightmare. Devils included.