One of the best ways to mark a special occasion, whether that's a landmark birthday or long-term anniversary, is to stage a worldwide trip that ticks multiple places off your bucket list at once. Not only will you get to experience some of the sights you've always wanted to see up close, but you will also have so many memories by which to remember this exceptional celebration.

In terms of diversity of experience, nothing can beat a world cruise - arguably the ultimate cruise holiday. As you sail to the four corners of the globe, taking in some of the most wondrous sights and encountering the most amazing locations on earth, unspoiled vistas and urban metropolises, jungles and deserts, glaciers and tropical beaches will all leave their unique and lasting impression.

If you would rather travel by land than sea, including along the rails of the world's train tracks, we have some amazing extended tours for you to consider. These once-in-a-lifetime adventures of 30 days or more allow you to spend more time exploring a specific region or country, experiencing beautiful accommodation along the way.