⛵ Scenic Ferry
The road itself is the destination. Hot springs, viewpoints, waterfalls, and canyon stops along the way. Everyone who does this talks about it for years.
Best time: October–April (dry season)
Only ride if you're licensed for motorbikes and the local rules accept your license (many places don't accept a US license on its own), wear a helmet, and know that many travel insurance plans won't pay for a crash if you weren't licensed. Before you go, check your insurance.