Whether you're looking for inspiration on things to do or simply need to find the nearest Wi-Fi location, there are . And mobile apps can come in handy when it's time to navigate, regardless of whether you're climbing a distant mountain or wandering the streets of a modern city.

In fact, if you plan ahead and download apps with offline guides, maps and other databases beforehand, you won't even need an Internet connection. You'll avoid sky-high international data bills, and you'll also save time, which you can instead spend immersing yourself in your destination. As summer heats up, consider the following apps to make your vacation memorable and hassle-free.

-- Isabel Eva Bohrer

Salk International LLC