There's something for everyone when it comes to cruises, but for the rich it's a whole different world. These are the world's most expensive cruises.

Silversea Cruises is an Italian family-owned company that specialises in intimate, deluxe ships. Its World Cruise 2017 set sail from San Francisco in January and took in 62 ports in 25 countries over 116 days.

Sailing aboard the Silver Whisper, a boutique ship for 382 guests, all suites had an ocean view and a personal concierge. Extras such as business-class flights and exclusive day-trips were included.

Guests handed over £41,786 per person for the Vista Suite, which doesn't even have a balcony.

The most expensive option – the two-bed 1,264-square-foot Owner’s 2 Suite – has a large teak veranda to lounge on, multiple marbled bathrooms, and includes dinner at the officer’s table. All this and more for a cool £154,168 per guest.

Still regarded as the most expensive cruise ever created, the Million Pound Cruise was crafted by UK company Six Star Cruises, who described it as “the world’s most luxurious 124-day vacation”.

The cruise sailed in 2013 and cost around £1 million per couple – that’s £8,000 a day.

For such a pretty penny, guests began with a beluga caviar and Champagne-fuelled helicopter transfer to the airport followed by a private jet to the USA with catering by a Michelin-starred chef. Transfers Stateside were in a Rolls Royce Phantom to a Beverly Wiltshire hotel suite (pictured) in LA for four nights before setting sail.

Staying in a 1,000-square-foot Royal Suite on Silversea’s Silver Whisper, guests on the Million Pound Cruise spent 115 days on board sailing around the world.

The ship visited 28 countries, including Tahiti (pictured), Australia, Malaysia, Vietnam, Madagascar and a series of Caribbean islands.

For months passengers were treated to stunning views of endless seas and special shore excursions. There was an on-board spa, live performances in the theatre (pictured), fine dining restaurants, talks and wine tasting – all in a child-free environment.

When the cruise pulled into its final port, Fort Lauderdale, guests were taken to an exclusive £7,300 a night villa in Miami.

Cruising isn’t just about indulging, it’s also about once-in-a-lifetime experiences. National Geographic Expeditions offer trips around the world, from Portugal to the Polar regions, that enable guests to indulge in a little learning.

Expedition ships such as the National Geographic Explorer are smaller and ice-class in order to cope with challenging weather and topography.

The Explorer sleeps 148 guests in 81 cabins, all with sea views. There are the usual cruise comforts: a lounge, library, and a spa, sauna and fitness centre, plus the more unusual extras, such as Zodiac landing crafts, kayaks and specialised video equipment so guests can get up close and personal with the underwater wildlife.

National Geographic’s most expensive option is the 24-day Epic 80°N around the high Arctic. Starting and ending in Iceland, the trip follows the little-explored northwest Greenland coast, takes in the coastal beauty of Ellesmere Island and Baffin Island (pictured), and ventures in to Lancaster Sound – the gateway to the legendary Northwest Passage. Instead of ticking off the sights at busy port cities, passengers witness gargantuan icebergs and polar bears, walruses and whales.

This incredible opportunity comes at a price, though. The cruise starts from £19,831 per person (more for single occupancy) and goes up to over £37,000 for the best cabins. This doesn’t include airfares to Iceland, either.

Christened by Her Serene Highness Princess Charlene of Monaco on July 13 2016, Regent’s Seven Seas Explorer is currently hailed as the most luxurious cruise ship ever built.

Costing an eye-watering £344 million to build and fit out, there are no paltry cabins on this opulent ship – it’s suites all the way – while the Deck 11 pool area (pictured) boasts impressive views and attentive crew to cater to your needs.

The Seven Seas Explorer is nothing short of palatial. High ceilings, sweeping staircases, stone floors flecked with gold leaf, and crystal chandeliers adorn public spaces – there’s even a £382,000 bronze sculpture and specially-commissioned artwork.

The breakfast buffet has a self-serve caviar station and there are 400 Versace place settings in the Compass Rose restaurant (pictured). Foodies can take classes in the culinary arts kitchen or indulge in exclusive gourmet explorer tours on land.

The luxury extends across the ship and into the Canyon Ranch SpaClub, with its dramatic infinity plunge pool (pictured), heated ergonomic loungers, a full-service salon and unique ocean-themed treatments – all fashioned to the highest standards.

There's high competition for the most luxurious cruise cabins in the industry, but Explorer’s Regent Suite arguably takes the crown. All suites boast oversized balconies and complimentary chilled Champagne, but the Regent is astounding. At 4,433-square-feet (including the balcony) it’s the largest suite at sea with 270-degree views over the bow of the ship. Guests sleep in a £70,000 bed and can tinkle the ivories of a £190,000 Steinway piano, should they feel musically inclined.

The Regent Suite also has its own in-room spa – another first – with unlimited treatments, and a private garden. Guests get a private car and driver at every port too.

According to Bloomberg.com, Regent is regarded as the most expensive luxury cruise brand. This is because almost everything, from flights and shore excursions to drinks and gratuities, is built into the price. Bloomberg estimates a price tag of £790 per person, per night, though the breathtaking Regent Suite will set you back 10 times that.

Best known for its transatlantic crossings, the Queen Mary 2 is the grande dame of ocean liners and the epitome of elegance. In 2016 it was refitted, returning as Queen Mary 2 remastered. It comes as no surprise that the Queen Mary 2, or the QM2 as she’s also known, has fans among the rich and famous. The New York-Southampton voyage is especially popular as a deluxe alternative to flying. HM The Queen, Hillary Clinton, Beyoncé and Sting have all sailed on the ship.

Cunard’s flagship vessel is renowned for having some of the plushest suites on any cruise liner, of which the Queens Grill and the Princess Grill suites are the grandest. The Grill suites are "personal enclaves of luxury" that grant exclusive access to the Grills Lounge, sun deck and dining rooms (pictured).

The duplex suites have 2,249-square-feet of space with beautifully-appointed bedrooms and marble bathrooms on the upper level, and stylishly-decorated living space and another bathroom on the lower level, connected by a sweeping staircase. There’s also a private gym and balcony. Guests at the Queens Grill also have their own personal butler.

A round-the-world trip in a Queens Grill suite can cost up to £138,000 – that’s more than £1,200 a night, making it one of the priciest cabins on the water.