When your cruise ship docks at the port of st petersburg head out on a full day shore excursion to discover the citys top attractions and history take a tour of the hermitage known formally as the state hermitage where some 3 million pieces of artwork from prehistoric times to the modern day are found and then explore the hulking peter and paul fortress one of the citys oldest structures visit the stunning st peter and paul cathedral church of the saviour on spilled blood and stop fo