I'm pretty well traveled but in a similar theme to most other posts here Japan is still very high on my list for somewhere I'd want to go.
I'd like a holiday in some main cities like Tokyo/Osaka but I'd also love to save up some ¥en, take like a year out from my life to just travel around most of Asia. I really want to see as much of Japan as I can including the countryside which from what I've heard is amazing. In a proper traveler style though I also wanna check out China, Mongolia, India, North & South Korea, Vietnam, Taiwan, Thailand and the Philippines (hence why I'd need at least a year to see what I can of these countries). There are still some other places in Asia that interest me but I mentioned all the places I'd be mostly likely to definitely make a part of my venture.
I'd also like to visit Egypt & Australia but that'd be for a holiday not traveling.
The U.S. isn't priority for me but ofc there are many places I'm sure I'd like, like Vegas, Cali & New York. My work will eventually take me to San Diego & New York maybe not for a year or two though.
For work I ended up in the mountainous French town of Chamonix once which is a very beautiful & nice town I promised myself I would revisit for a holiday at one point in my life. I would highly recommend this town for anyone wanting to travel those parts of Europe. You could even double up your trip if spending some time in France or Italy, make your way to the Cable car over Mount le Blanc, spend some time in Chamonix, cross the border and check out the neighbouring country. If you've ever wanted to go France or Italy I think this would be a great way to do it and see/get more from your experience. I spent some time in Milan and Paris this way, stopping off for a night in Chamonix after crossing the border.
I should be heading Brazil end of this year and that's somewhere I've always wanted to go so I'm excited for that.
Amsterdam - Looks like a lovely place and I have a friend who lives in The Netherlands.
Definitely go Amsterdam, of all the places I've been it is and always will be one of my favourite cities.