New York celebrates the 400th anniversary of Henry Hudson's voyage

The Netherlands' Crown Prince Willem-Alexander and Princess Maxima share a laugh with Hillary Clinton, the US secretary of state, and Michael Bloomberg, New York City's mayor, on the deck of the USS Intrepid in New York Photograph: Lucas Jackson/Reuters

A replica of the Half Moon, Henry Hudson's ship, leads a flotilla up the Hudson River. Hudson, from England, explored the area now known as Manhattan in 1609. The expedition was sponsored by the Holland-based East India Tea Company Photograph: Stephen Chernin/AP

Flags fly as the Dutch naval band is reflected in a tuba Photograph: Stephen Chernin/AP

Bloomberg, Princess Maxima of the Netherlands, Crown Prince Willem-Alexander and Clinton take part in festivities celebrating the 400th anniversary of Henry Hudson's voyage that opened up present-day Manhattan to European settlers. In 1626, the Dutch bought the island from the Lenapes people for the equivalent of $24 Photograph: Spencer Platt/Getty

A Dutch naval band plays as as the flotilla cruises up the Hudson River Photograph: Spencer Platt/Getty

Mayor Bloomberg speaks on the deck of the USS Intrepid as Clinton and the Dutch royals look on. Bloomberg said: "Henry Hudson arrived on these shores 400 years ago and helped lay the foundation for what would later become New York City" Photograph: Spencer Platt/Getty

A flotilla of 11 ships including Dutch naval frigates, Nato vessels, Dutch barges and a replica of Henry Hudson's Half Moon sail past the USS Intrepid Photograph: Spencer Platt/Getty

The flotilla makes its way up the Hudson. NY400, the celebration of Henry Hudson's historic voyage, kicked off today. Festivities including bike rides, art exhibits and food events are planned across New York Photograph: Stephen Chernin/AP