Thailand - everywhere from the mountainous northern areas with cooler climate and different cultures (Chiang Mai, Chiang Rai, Lampang) to the valleys and rivers and rich history of central Thailand (Ayuthaya, Kanchanburi, Lopburi) to the coastal provinces and islands; I just love it and it's definitely one of my most favourite countries overall. Brilliant food, amazing nature, bustling nightlife and (mostly) friendly people.
Eifel region (Germany) - the mountainous range with cozy little towns and tiny villages stacked in countless valleys and other amazing landscapes with lush forests, flowing rivers, natural mineral springs and blue crater lakes, windy hill roads, numerous castles, remains of Celt and Roman structures and houses dating from the Middles Ages. The national park is teeming with wildlife, the region is rich in culture and history and then of course there is Nürburgring... That's where I used to spend most of my time in Germany growing up and it's extremely beautiful at any time of the year (especially in autumn).
Kep (Cambodia) - a small coastal town in South Cambodia near the border with Vietnam. Quiet, clean and very picturesque with mountains of the national park in the background and a long coastline with mangrove marshes and rocky beaches. Also amazing seafood, incredible sunsets, laid back flair, a lot of hiking trails and a few nearby islands to explore.
Austria - I haven't spent much time in one particular place but the whole country boasts an absolutely breathtaking nature dominated by glaciers, lakes and of course the Alps, but also scenic cities and small charming towns that offer everything that one could desire in terms of culture, historic attractions and nightlife. Great food and beer and I also like the people and their mentality.
Curonian Spit and the nearby city of Klaipeda (Lithuania) - an elongated sand dune peninsula in the Baltic Sea that's also a UNESCO World Heritage Site. Massive travelling dunes, lovely natural beaches with amber washing out on the shore after storm, pine scent everywhere and a handful of protected traditional fishermen villages and old trade villages dating from 10th-11th century. Nothing much to do here other than enjoy the nature and relax in quite resorts, but the nearby city of Klaipeda (my birthplace ) serves for other cultural and entertainment needs. The distinctly German-style Old town with cobbled streets and unique Fachwerk style buildings is particularly nice and the whole city has a very relaxed flair.