The world passport index allows you to verify entrance requirements to the other countries of the world for whatever passport(s) you hold. Just click on the box of your nationality in the right hand column and then click on "compare." You can compare up to four nationalities and some of the differences can be surprising.
.....and as with these third party websites, they cannot be trusted. If just one error is found then it throws the rest of the info in doubt. UK passport holders are "visa free" when going to Zambia - it says. Nope, not true. You can get one on arrival, as it states with, for example, a German passport, but it is not visa free. Always check with the intended country itself.
In the travel industry we learned that no list is ever up to date and for certain countries must be checked just about every day. And yes, the only word of authority is the country itself. Unfortunately, immigration agents checking passports often do not know the rules either. Anybody who has travelled a lot generally has more than one anecdote to tell about the various resulting incidents.
WoW - are we far down the list at 93. Not surprised really. We shouldn't be giving out passports to all who can give us a back-hand... Can't believe we beat Qatar and Kuwait - those holy than holy, (don't dare steal anything), countries.
The EU didn't however follow through on its threat to require visas for US passport holders prompted, if I remember, by the US requiring visas from a couple of the eastern EU members. I've never had to get a visa, which tells you I guess I haven't been a very adventurous traveler.
For many years I had two passports so I could be travelling on one whilst the other was dormant or getting visas for places I would be going next. Unfortunately at the last round of renewals they asked me to prove I still needed two and as I couldn't, I had to hand one back.