If you wanted the quick Westerwald experience, there is a definite answer to the question of "What should I see first?". With these three destinations, you will have experienced a bit of everything that the Westerwald has to offer.
Liege is an underappreciated travel destination in a country full of many world-class places to visit. Combining the traditions of several different cultures, it offers a unique local culture, boasting unique foods, architecture, and its own dialect. Though it suffered from the deindustrialization of the 20th century, it retains most of its old-world charm.
No. Cologne is not a city worth visiting, and why people say otherwise is a mystery. Unless you like churches, there isn't much to see here, and getting nice pictures of Cologne was a real challenge. Here I will outline why Cologne should be skipped on your itinerary.
Saarbrücken cannot be described as the gem of the Saarland, but it still has something to offer the passing traveler. Come and explore the unique Protestant cityscape and the charming old town of Saarbrücken.
Mainz is an often overlooked destination due to the destruction the city faced in WWII, but that should not be a reason to skip Mainz, as there is enough left to make it worth your time.