On Saturday, the majority of Prague’s museums will stay open past midnight as part of the city’s annual museum night, now in its sixth year. Most of the 53 participating institutions will be open to visitors from 7 p.m. free of charge. Special concerts, theater performances and lectures will be part of the program. The capital’s transport authority has extended its metro services until 1:30 am to accommodate visitors of museum night; special busses will also be in effect. Last year, some 180,000 visitors attended the event.