The 'three immortals' name refers to a local legend claiming that three Chinese deities—Lü Dongbin, Li Tieguai, and He Xiangu—once rested on the islands.
The eight-arch bridge was constructed in 1987 to facilitate easier access to the islands without damaging the fragile coral reef ecosystem.
The area is geologically significant due to its exposed andesite lava flows and volcanic agglomerates formed during the Miocene epoch.
The sea-eroded trench at the site is one of the most prominent examples of coastal geomorphological development along the eastern Taiwan coastline.
The islands are home to a rare plant species called the 'Pinus massoniana' or Taiwan pine, which thrives in the salt-sprayed environment.
Sanxiantai is a coastal scenic area in Taitung County defined by an eight-arch pedestrian bridge connecting the mainland to three offshore coral reef islands. The bridge mimics the shape of a dragon and serves as the primary route for crossing the turbulent waters of the Pacific Ocean to reach the islets. The area features unique geological formations, including sea-eroded platforms, sea trenches, and potholes created by volcanic rock weathering. Visitors can explore a coastal trail that loops around the main island, passing through dense vegetation and rocky terrain. The region is part of the East Coast National Scenic Area and is renowned for having some of the earliest sunrises in Taiwan. The bridge structure is designed to withstand the region's strong winds and typhoon-prone weather conditions.
The elevated viewing platform on the mainland shore looking back toward the full span of the eight-arch bridge.
Wear sturdy, closed-toe walking shoes to navigate the uneven coral reef paths on the islands.
Carry plenty of drinking water and sun protection, as there is almost no shade once you cross onto the islands.
Check local weather reports specifically for wind speeds, as the high bridge can become hazardous during gusty conditions.
Attempting to walk across the bridge during high wind warnings or typhoon alerts; neglecting to bring adequate hydration.
The bridge may be temporarily closed during severe weather events or typhoons for safety.
Stay strictly on designated trails to protect the fragile coral reef ecosystem; do not remove any rocks or coral specimens.
