The Tropic of Cancer marks the northernmost point where the sun appears directly overhead at the summer solstice.
Taiwan is one of the few places in the world where the Tropic of Cancer crosses a populated landmass, specifically crossing three distinct locations on the island.
The Ruisui marker is strategically located in the Hualien section of the East Rift Valley, an area geologically positioned between the Eurasian and Philippine Sea plates.
The marker serves as a visual indicator of the climate boundary between the subtropical north and tropical south of Taiwan.
The Tropic of Cancer Marker Park in Ruisui marks the exact geographical line where the 23.5-degree north latitude crosses the island of Taiwan. This specific marker is one of three such monuments located on the island, with the others situated in Chiayi and Hualien's Fengbin Township. The site features a prominent white, tower-like monument designed to celebrate the solar alignment. The surrounding park grounds contain educational exhibits detailing the astronomical significance of the tropic. Visitors can view the transition between the subtropical and tropical climate zones of Taiwan. The site serves as an open-air observatory for understanding Earth's axial tilt. It is situated in the fertile East Rift Valley, surrounded by mountain ranges. The facility is managed as a public space with open accessibility.
The base of the white marker monument provides the most iconic angle for capturing the pillar against the backdrop of the Coastal Mountain Range.
Bring a hat and sunscreen as the area is fully exposed to direct sunlight with minimal natural canopy.
Check the local weather forecast specifically for Ruisui, as the valley often experiences different conditions than the coastal areas.
Combine this visit with a trip to the nearby Ruisui Hot Springs, which are located just a short distance away.
Do not attempt to climb the monument structure, as it is intended for viewing purposes only.
