To find flying sites, you can use Gaggle or SkyFlyHy mobile apps, plus a GPS spoofer.
First, search for cable cars or other easy access high mountain locations in the country you're going to visit. Then set your GPS spoofer to that location and open up your paraglider flight recorder software (presuming it has a social aspect which shows recent flights). Now you'll see recent flights in the area. By viewing the track of recent flights, you can see where they've been taking off and landing.
Sometimes you can manage to find a flying club in the destination country. One way to do this is look on youtube for paraglider videos for the country you're going to visit, and just put a comment on the video. It's somewhat likely that the pilot will reply with helpful information, like an email address or web page.
Sometimes landing zones are very small.
Here is one in Tromso, Norway, that measures just 50 feet wide by 150 feet long, but it's only a 3 minute walk to the cable car.