Take the MRT Orange Line to Yanchengpu or Siziwhan station (terminus). Nice area to walk around along side the harbour. Many old warehouses that have been repurposed in to shops, exhibits etc. I particularly enjoyed the Hamasen model railway museum. I don't think I'll ever see a better model train layout (read huge) in my lifetime. Though I thought the entry fee was a bit steep. Another 2 storey building along side the harbour houses a number of food outlets, craft and accessories vendors. The Light Rail train runs along this area. I combined my visit here with the Kaohsiung Music Center which is nearby. Certainly worth 2-3 hours or more of your time.

This area provides the chance to stroll along the waterside past numerous warehouses converted to art shops, coffees shops, mid-range shopping, etc. to reach the music center. Numerous modern-style outdoor murals, sculptures, and the like present interesting photo opportunities. Some facilities feature artists of various sorts selling their works, and there seem to be occasional exhibits of paintings, etc. At 3:00pm on most/all days, the Great Harbor Bridge starts to swing open to allow any ships passage. It seems that foot traffic around the pier picks up meaningfully around the late afternoon. Visitors may also enjoy watching one of the 15-20 minute movies at the Virtual Reality (VR) theater amidst one section of the former warehouses.

Pier 2 Art Center is always a pleasure. I've been going for years despite living abroad. I like the general vibe of local artists coming together to foster sort of a creative safe space they can share with others. Especially since it involves former warehouses that have been converted to house these contemporary art spaces. The exhibits are always changing, each theme as interesting as the last, but some stay the same. For example, the railway museum with the mini-train ride has been there for a while.  The shops are nice, quirky, and unique, and it's always a pleasure to look inside. Keep in mind these are local, often indie shops, so a bit more expensive than usual, but solid products. Each exhibit has its own stamp (as in rubber stamp, not postage stamp), in case you collect those. All in all a highlight for me. It's easily accessible via light rail or MRT. When we went, there wasn't much going on, but last time (years ago) it was too crowded, so... luck of the draw, I suppose.

Nice interestingly big place overlooking the sea. Lots of activities & locals, probably due being a weekend. Besides the many shops, there is a long stretch of flea market ( not sure if only on weekends only ), with stalls selling all kind of interestingly arts & crafts stuff, and others. Certainly a good place to visit & enjoy the atmosphere & activities.