We've not featured a Japan cruise in the Top 20 since early 2010, which is why we love this deal from Imagine Cruising. For £1449 per person, you get a sailing around Japan's coast and a luxury stay in Tokyo -- a city that "competes with Manhattan for iconic buildings and sheer buzz" (Condé Nast Traveller). The offer saves over £560 on putting it together yourself.
Flights depart from London Heathrow on 26 June. Travel on 3 October for £80 more per person or on 5 July for £150 more per person. Visit Imagine Cruising's website for more May-September travel dates.
The luxury Grand Pacific Le Daiba is on the island of Odaiba in central Tokyo. Facilities include an outdoor pool and a fitness centre, as well as six restaurants, serving a mix of local and international dishes, a café and a bar. The hotel is a short walk from the Daiba Monorail station and the Aqua City shopping centre. Tokyo Imperial Palace and Tokyo Tower are 20 minutes away by taxi.
The cruise starts in Tokyo. From there, the ship heads to Kanazawa, in Japan's Hokuriku region and Maizuru, home to Kyoto's Zen Rock Garden and the Golden Pavilion Temple. Next, you'll sail to the fishing port of Sakaiminato, before crossing the Sea of Japan to Busan in South Korea. The final stop is Nagasaki on the island of Kyushu, before the ship returns to Tokyo for the flight home.
Must-dos include a visit to the Nagasaki Atomic Bomb Museum and a wander around the preserved Geisha districts in Kanazawa.
One of two Princess ships built in Japan, Diamond Princess features the Sanctuary (an adults-only area for relaxation), Movies Under the Stars and the Japanese Baths, launching in April. There are several dining options including Sabatini's Italian restaurant, Sterling Steakhouse, a sushi bar and an ice cream parlour.
The price is based on two sharing an Interior Stateroom. Upgrade to an Oceanview Stateroom for £200 more per person.