The Principality of Liechtenstein is one of the smallest countries in Europe. It is the last remnant of the Holy Roman Empire and an independent nation with very close ties to Switzerland.
The Principality of Liechtenstein is compactly squashed between Switzerland and Austria. The whole area is 160 km2 and population is around 34,000. There are no airports in the Liechtenstein, so you could fly either to Austria or Switzerland and then take bus, train or car.
There are number of cities in Liechtenstein although due to small area they are basically compactly located merging one into another.
There is not much of sightseeing. At the same time there are plenty of hiking and mount biking. Skiing and snowboarding are also offered in small city of Malbun. Aside from that you can take a look of Balzers and Vaduz Castles. Another nice point is Triesenberg, a small village uphill from Vaduz with a great views of Swiss Alps.
National tourism website offers great explanation of all hiking trails, including multi-day hikes. One of the most exciting trails is The Panorama of Liechtenstein — it goes from Malbun to Augstenberg via famous Drei Swestern mountain.
Unfortunately in the beginning of April these trails were impassable due to snow still present. I’ve tried one of the trails, but had to stop in about 1.5 hours from the beginning due to steep snow-covered ridge. Having only regular sneakers, I decided to turn back and return to Vaduz.
At the same time in Malbun ski lifts were still working. And some occasional skiers and snowboarders were enjoying leftovers of the snow.