On April 30 2011 Florence will have another   Notte Bianca . The idea is to focus on contemporary , with the intention of showing Florence not only as a renaissance city. Among the most important events a multiethnic  orchestra, as a street band, will  move from piazza Cestello along the Lungarni . The Uffizi piazzale will put up jazz marathon of young  Italian and foreigner musicians. More information and details on www.comunedifirenze.it     On the occasion the mayor Renzi will offer to the visitors a free entrance to the Uffizi Gallery from 7:00 pm to 12:00 pm.