Kaohsiung is the second largest city in Taiwan and located in the South (The capital Taipei is located in the North). It is significantly more rural than Taipei which has all the trappings of a sprawling, congested metropolis.
One can take a flight to Kaohsiung from Taipei SungShan Airport or take the High Speed Rail to Kaohsiung's Zuoyin Station. The journey takes only 2 hours. Compared to taking a flight, it almost takes the same time to arrive if you consider check in time, waiting time, waiting for baggage...