The Borealis in the second decade of December 2023 gets ready to leave Liverpool for the Classic Christmas Markets cruise. It will call at Zeebrugge, Amsterdam and Hamburg to take in some of Europe’s best festive markets. (Photo by Bav Media)

Kaci Nuyen 8, holds a “Kiddizoom Twist” camera during a Hamleys Christmas toy photocall at Hamleys Toy store on June 28, 2011 in London, England. The famous toy store unveiled today their “must have” toys for Christmas 2011. (Photo by Dan Kitwood/Getty Images)

Migrants react after boarding the Migrant Offshore Aid Station (MOAS) ship MV Phoenix some 20 miles (32 kilometres) off the coast of Libya, August 3, 2015. Some 118 migrants were rescued from a rubber dinghy off Libya on Monday morning. The Phoenix, manned by personnel from international non-governmental organisations Medecins san Frontiere (MSF) and MOAS, is the first privately funded vessel to operate in the Mediterranean. (Photo by Darrin Zammit Lupi/Reuters)

The cruise ship Costa Concordia lies stricken off the shore of the island of Giglio, on January 17, 2012 in Giglio Porto, Italy. More than four thousand people were on board when the ship hit a rock off the Tuscan coast. At least 11 people have been confirmed dead and another 24 missing. (Photo by Laura Lezza/Getty Images)

Workers collect fish inside an abandoned department store in Bangkok, Thailand January 13, 2015. Staff from Bangkok Metropolitan Administration (BMA) office were catching fish on Tuesday at the ground floor of the roofless New World department store that was closed down in 1997. Thousands of fish such as catfishes, fancy carps as well as black and red tilapias were released into the ground floor of the building, flooded with rainwater, as local vendors tried to control mosquitoes in the area, local media reported. BMA recently decided to remove the fish and release the water. (Photo by Chaiwat Subprasom/Reuters)

The “Hoegh Osaka” ro-ro cargo ship, operated by Hoegh Autoliners AS, sits grounded on Bramble Bank in the Solent near Cowes, on the Isle of Wight, U.K., on Monday, January 5, 2015. The car transporter was deliberately grounded after developing a list, shortly after it left the Port of Southampton. (Photo by Simon Dawson/Bloomberg)

These spectacular photographs give a stunning birds-eye of view of the decks from some of the world's biggest cruise liners. New York based Photographer Jeffrey Milstein spent months hovering over the oceans using high-resolution camera equipment to capture views from a helicopter.