Halland is the south western area of Sweden, close to the city of Gothenburg. Kungsbacka is a smaller city, about 17 miles south, near the mouth of a river. It marks the southern extreme of the Gothenburg commuter rail network. If you hire a car in Kungsbacka, of course, it's easy to drive to Sweden's second city. But, it's also a chance to explore the coast and countryside to the south, like the beaches on Lyngern Lake, the forests to the north of the city and the scenic coastline and beaches around Asa.
Hiring a car in Kungsbacka makes exploring the city and its immediate area easy. The most popular attraction locally is the Tjolöholms Slott stately home. This is a 100-year-old mansion deliberately built in the British arts and crafts style, with fine gardens and its own beach. For a completely different experience however, head for the Freeport Designer Outlet Village where leading brands are sold at discount prices and the massive Kungsmassan shopping mall in the city itself.