1. Ancient Town
Hoi An's Ancient Town is the whole reason you're here. This UNESCO World Heritage Site, recognized in 1999, is a remarkably preserved trading port that thrived during the 17th and 18th centuries when Japanese, Chinese, and European merchants all did business along these narrow streets. Most buildings date from the 1600s to the 1800s, and the town survived both wars and the rapid urbanization that changed the rest of Vietnam. Walking through, you pass Chinese assembly halls, Vietnamese shophouses, French colonial facades, and the famous Japanese Covered Bridge, all within a few compact blocks. The Old Town ticket costs 120,000 VND and gives you access to 5 of 22 heritage sites, including old houses, assembly halls, and museums like the Hoi An Museum. You pick which 5 you want to visit when you buy it. The whole area is pedestrian-only from about 8 AM to 11 AM and 3 PM to 9:30 PM, which makes exploring on foot far more pleasant than other Vietnamese cities. After dark is when the Ancient Town transforms. Paper lanterns light up every street, the Hoai River fills with glowing boats, and the atmosphere shifts completely. If you only have one evening for things to do in Hoi An, spend it wandering here. The must-see in Hoi An is this town itself, not any single building inside it.