Taichung is where Taiwan comes to play. It has a younger, more laid-back feel than Taipei, a serious street-food scene and a string of photogenic spots scattered along the coast and into the hills.
The city itself is pleasant rather than spectacular, but its surroundings are excellent: the boardwalks of Gaomei Wetlands at sunset, the rainbow-painted lanes of Rainbow Village and the flower fields of Zhongshe. Use it as a base for Sun Moon Lake and the central mountains.
Taichung works best as a two-night stop: one afternoon in the city, one evening at Gaomei, then onward to Sun Moon Lake or the mountains.
The high-speed rail station is outside the centre, so allow 30–40 minutes to reach the city by shuttle or taxi.