Plying the waters of the five boroughs used to be a pricey tourist treat (the Staten Island Ferry’s ancient route notwithstanding), but now Mayor Bill de Blasio has set up the heavily subsidized citywide ferry system, which offers 54-minute voyages from the canyons of Wall Street to the sea walls of Beach Channel Drive in Rockaway for just $2.75. Hop an early Friday afternoon ferry to beat the ever-growing crowds and nab a seat up top (with maybe a detour to the bar, well-stocked with local beers) and watch as landmarks like the Freedom Tower and Statue of Liberty fade into an ocean-blue horizon.