The Tropic of Cancer Monument in Chiayi, Taiwan, holds significant geographic importance and serves as a popular tourist attraction. It marks the northernmost circle of latitude on Earth at which the sun can be directly overhead during the June solstice, a phenomenon occurring around June 21 every year. The monument features a large white obelisk and various solar devices, including analemmatic and ecliptic sundials that demonstrate the principles of astronomy and the earth's movement. The park surrounding it includes educational displays that explain the significance of the Tropic of Cancer and the reason for the change of seasons. The site is a must-visit for those interested in geography and solar phenomena. Besides its educational value, the monument is also a favorite spot for tourists to capture the symbolic moment when their shadow disappears at noon on the solstice. The blend of scientific interest, cultural importance, and photogenic setting makes the Tropic of Cancer Monument a distinctive landmark.