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The World's Tenth Landmark of Tropic of Cancer

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June 21st , 2004 was the summer solstice of Northern Hemisphere. On the same day, the world's tenth landmark of Tropic of Cancer was officially established. The landmark, including six marks representing Tropic of Cancer over the years, is located at the intersection between Bo'ai Road and Shixian Road in Chiayi, Taiwan.

Tropic of Cancer is the boundary of northern temperate and torrid zone. Polar circles, tropics, and the equator are significant landmarks of the world which divide the earth into five zones, including northern rigid zone, northern temperate zone, torrid zone, southern temperate zone, and southern rigid zone.

The landmark group of Tropic of Cancer in south western part of Chiayi City is located at the busy traffic base. The landmarks of the group are built in four different years. These landmarks may not be spectacular, yet they encompass traffic, sightseeing, historic, cultural, and geographic educational significances.

At present a marble tablet is erected in the central safety island in north-western direction. Illustrations with texts inscribed in the marble tablet inform people that the Tropic of Cancer had run through this place without notice at the end of eighteenth century and was closely related to the naming of Chiayi.

Illustration Regarding the Shifting of Tropic of Cancer to South
The tropics are the circles marking the latitudes based on astronomy's equal obliquity. Precession movement, nutation cycle, and pole shifting are three factors that change the angle of obliquity. Moreover, plate movement is another factor which causes the shift of tropics. As a result, The Tropic of Cancer shifts toward south at the speed of 14 meters or higher annually. In 1788, the Tropic of Cancer ran through the northern part of the intersection between Bo'ai Road and Shixian Road in Chiayi City.

In view that the intersection is an important traffic base of south-western Chiayi City, six historic landmarks of Tropic of Cancer are built as a beautiful landscape among roadways. Meanwhile, the landmarks are rich in history, culture, and astronomic education.

Travel Information

(Traffic information is subject to change. Please check with the transportation station before departure.)
  1. Nat'l Fwy 1 → Exit at the Chiayi Interchange → County Hwy 159 → Prov. Hwy 1
  2. Nat'l Fwy 3 → Exit at the Zhongpu Interchange → Prov. Hwy 18

Take TRA to Chiayi Station, transfer Chiayi Bus to Liucuo stop.

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Last update time: Oct 25, 2023
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