Things you don’t know about passports. Some essential, some just fun.

Your passport is not necessarily valid until the expiration date.
Your passport has a very clear expiration date, but that doesn’t always mean you can travel with it right up to that date. Many countries require that your passport be valid for a specified time after you arrive; this is to ensure that you don’t let your passport expire while in the country, stranding you there.
Some countries require that your passport be valid for 90 days after entry, including most European countries governed by the Schengen Act, but a safer rule of thumb is six months, which is the length of time required by China, Indonesia, Russia, Saudi Arabia and many other countries.
The State Department has a list of passport validity requirements here, but beware, this information may not tell the whole story. For example, to enter Brazil, the site indicates that your passport must be valid on the date of entry – but to get a Brazilian visa, your passport needs to be valid for six months beyond the date of entry.

Getting a visa may take more time than you think.
Speaking of visas, applying for one can be among the most complicated document transactions you will ever encounter. Many countries have multiple types, including tourist, work, business and student visas, and the application process and turnaround times can vary dramatically for each.
Additionally, some embassies and consulates require appointments to apply for a visa, sometimes with weeks-long wait times, while others may process only visa applications submitted through a third-party agency – and this can vary not only by country, but by the specific consulate office location. You sometimes need to show plane tickets, a letter of invitation and other documentation.
Add to these issues the fact that many consulates are understaffed, and getting a visa needs your attention well ahead of time. To avoid scrambling or paying expedite fees, start the process at least two or three months before your trip. Remember that you’ll have to give up your passport while the visa is being processed, so you’ll want to schedule your application around any other international trips you’re taking.

Renewing your U.S. passport overseas is actually pretty easy – but you need a little time.
If you are living or traveling abroad for an extended period of time, you may need to renew your passport while overseas. The process for this isn’t that different from doing so at home, although you will face some of the issues mentioned above, such as the need for an appointment or requirements that applications be mailed and not presented in person. This report from an American living in Paris underscores both the challenges and relative ease of the process.

There will be a rush on U.S. passport applications in the coming year or two.
In 2005 Congress passed the Real ID Act, which set authentication standards for passports, driver’s licenses and other official ID cards. The adoption schedule is a classic bureaucratic tangle involving varied deadlines, extensions and exemptions, but for travelers, the most important piece of information is that you will need Real ID-compliant identification to fly domestically starting January 22, 2018.
If you have a driver’s license, you’d think you would be okay, but the sticking point is that not all states have adopted the new standards yet, and if your driver’s license has been issued by one of those states, you will need some other form of conforming ID. Thus, many U.S. citizens will be forced to get passports if their state does not update its licenses. Here is the current status of compliance and adoption by state.
This is just one reason passport applications will likely go up in the next year or two; another is the upcoming anniversary of the Western Hemisphere Travel Initiative, which in 2007 made it mandatory to carry a passport for any air travel between the U.S. and Bermuda, Canada, the Caribbean and Mexico. This resulted in a large number of new and renewed passports being issued in 2006 and 2007 — all of which will be up for renewal this year or next.
Don’t get caught in the rush; check your passport status now and get ahead of it.

Many passports have cool secret features.
Canadian passport under uv light for example, what happens when you put a Canadian passport under a black light beats any “70s Show” nostalgia.
The new Norwegian passport – the design of which was chosen from a public competition – shows the northern lights when you put it under a UV light.
And the U.S. passport has some 30 different security features at work; meanwhile, the current Nicaraguan passport has 89 such features.

 

Not all “vacation” destinations require a passport.
Finally, if your U.S. passport is expired but you really want to travel outside the 50 states, you do have some options; consider visiting a territory of the U.S., where your driver’s license will suffice for now. Many of these are very attractive destinations, including Puerto Rico, the U.S. Virgin Islands (St. Croix, St. John and St. Thomas), American Samoa, the Northern Mariana Islands and Guam.

Based on the Independent Traveler article.