Australian luxury operator APT has decided that turning 100 deserves more than a cake. To mark its centenary in 2027, the company is running a one-off, never-to-be-repeated 100 Day World Tour: a single continuous itinerary stitching together five regions, three modes of travel and a fair chunk of the planet. The price of entry? From AUD$100,000 per person — fittingly round — with all connecting flights between the tour segments thrown in.

The journey departs Melbourne on 19 July 2027 and loops back to the same city on 27 October 2027, deliberately timed so guests are in town for APT's centenary celebrations. From Melbourne it heads north to the Kimberley for the operator's flagship wilderness experience, complete with 4WD exploration of remote gorges and ranges.

Then comes the European leg: river cruising from Budapest to Amsterdam along the Danube, Main and Rhine, plus a run down Portugal's Douro Valley — the port-wine river. North America follows with a Rockies tour, before the itinerary swings to South-East Asia for a Mekong River cruise through Cambodia and Vietnam. New Zealand's South Island gets a look in, and the final stretch returns to Australia for a gentler Murray River finale before the loop closes in Melbourne.

Beyond the headline itinerary, APT is promising centenary-only extras: surprise inclusions along the route, special guest hosts and exclusive souvenirs for those who sign up for the full 100 days. CEO David Cox framed it as the purest expression of what the company has spent a century refining — all-inclusive touring where, in his words, nothing is left to chance. The company has also flagged that 2027 coincides with its biggest-ever product investment, including new ships and new destinations, so this tour doubles as a showcase for what's coming next.

It's worth noting what a odd, specific product this is. It's not a hop-scotch of city stays; it's a single booking that mixes expedition-style 4WD travel, classic coach touring and luxury river cruising, with the logistics — flights between segments, transfers, meals — handled end to end. For the target traveller, that seamlessness is the entire point: one company accountable for 100 straight days of travel across five regions.

Who is it actually for? Deep-pocketed serial travellers, mainly — retirees or near-retirees with time and money who want a career-capstone trip rather than a holiday. A century in business is also a decent credibility signal in a market where operator failures do happen, and the fact that the itinerary won't be repeated gives it a collectible appeal. Bookings are open now via APT's website under tour code APT100, by phone on 1300 336 932, or through a travel agent. Given it's a one-off departure with limited cabins and coach seats, early commitment is the sensible play for anyone genuinely tempted.

Even if $100k isn't in your budget, the tour is a useful bellwether: ultra-long, multi-continent hosted journeys are back, and the luxury end of the market clearly thinks there's demand for them.