Seoul has ferry services like Ttukseom-Yeouinaru route for around 5000 won one-way. Amazing skyline views, reasonable price for water transport, way more scenic than those overpriced cruise tours. Different category from the 3000 won water bus - this is longer route transport.

Runs roughly hourly with about 16 trips daily. Catch evening departure for sunset timing. Actual transport with great views, not tourist trap. More comprehensive than short water taxi routes but still authentic Seoul experience.