Scheduled for March 2026, the journey is set to stop in 14 countries: France, Switzerland, Austria, Hungary, Romania, Bulgaria, Turkey, Georgia, Azerbaijan, Kazakhstan, China, Japan, Canada and the US. The tour is operated by Adventures By Train, who specialise in luxury trips - but nothing previously to this extent.

Although it promises to visit many UNESCO world heritage sites, this once-in-a-lifetime trip isn’t for everyone, with an eye-watering price tag of £112,900 per ticket. If booking as a couple, the tickets would be somewhat cheaper, priced at £89,950, reports Time Out. Only twelve lucky passengers will be able to step aboard for the service’s first trip, which will depart from London St Pancras railway station on 17 March 2026.

Travellers will be riding in first class and pass through stunning landscapes and rail routes, such as travelling on European sleeper trains through the Alps and the California Zephyr Amtrak route round the Rocky Mountains.

Director of the company Jim Louth said the trip ‘provides the perfect mix of world-class rail travel’ inside ‘optimum comfort’.

The groundbreaking rail route isn’t only limited to train travel. Passengers will sail on a 23-day voyage  from Tokyo to Vancouver, as well as crossing the Atlantic aboard the famous Queen Mary 2.

Due to the trip containing lots of intense travelling, the majority of the five-star hotels on the route are renowned for their comfort and style, such as The Langham in New York and Pera Palace in Istanbul.

Whilst 100 days might seem like a long time to be travelling around the world, one couple recently took it a step further with their plan to spend the next 15 years living on an all-around-the-world cruise, in order to escape both the mundanity and soaring bills of everyday life back home.

Lanette and Johan Canen, both 55, lived in Hawaii for 10 years but are now 6 months into an adventure of a lifetime.

‘People think we’re ultra rich for being able to do this,’ Johan told MailOnline. ‘But it’s cheaper than our rent and living costs in Hawaii. This is for normal people’.