Shimen Cave is a famous natural landmark on Taiwan’s North Coast, located along Provincial Highway No. 2 in New Taipei City’s Shimen District. Despite its name, it’s not simply a cave but a stunning sea arch about 10 meters (32.8 feet) high. It was shaped over millions of years by ocean waves and then lifted above sea level by the movement of the Earth. Today, it rises above the shore and is one of the most popular spots for photos in Shimen.
For more interesting images, watch the following video: “Explore Shimen Cave — Taiwan’s Iconic Coastal Arch.”
The arch features a stone stele inscribed with the Chinese character “Jing Zhong Zhao Hai” (精忠照海), meaning “Loyalty Shines Upon the Sea.” Visitors can enjoy sweeping ocean views from the coastal trails, pavilions, and the viewing platform atop the arch. Nearby, a reef area with a graceful white arch bridge offers an ideal spot to watch the waves, observe marine life, admire dramatic rock formations, or enjoy the sunset.
Panoramic views and cultural markers
Stone stairways on both sides of the arch lead up to a scenic viewing platform. At the entrance of the stairway on the right-hand side stands a vertical stone stele inscribed with the Chinese characters “North Shimen Scenic Spot 北石門名勝” erected on New Year’s Day in 1971. The reverse side reads “Natural Monument of Marine-Eroded Shimen (海蝕石門天然紀念物).” From the top, visitors can take in breathtaking coastal vistas and enjoy unforgettable sunsets.
Two marble plaques mounted on the arch further highlight the site’s cultural and historical significance. The plaque facing the highway reads “Jing Zhong Zhao Hai” (精忠照海), inscribed in 1964 by Huang Jie, then Governor of Taiwan Province. The ocean-facing side bears the inscription “Hai Tian Sheng Jing” (海天勝境), meaning “Spectacular Sea and Sky,” written in 1966 by Su Qingbo, then Taipei County Magistrate. Together, these plaques reflect the enduring cultural heritage of Shimen Cave.
A window into geological time
Shimen Cave is a textbook example of a marine-eroded sea arch. The formation began with fractures in the volcanic rock face, which were gradually widened and worn away by the constant action of waves. Over time, the rock collapsed and opened into the arch we see today. The surrounding rock strata mainly consist of volcanic breccia, andesite, and pyroclastic material, cemented by volcanic ash, offering valuable insight into Taiwan‘s geological past.
As documented in the Tamsui Gazetteer during the Qing Dynasty’s Tongzhi era, Shimen Cave was listed among the “Eight Scenic Spots Outside Tamsui,” indicating that its beauty has been long celebrated. Now elevated above the sea due to tectonic uplift, the cave is no longer subject to tidal erosion and is expected to be preserved for generations to come.
An outdoor classroom of nature and ecology
Shimen Cave is more than just a scenic lookout — it’s also an exceptional place to experience nature and observe local marine ecology — a coastal trail winds through rugged rocks, leading to a graceful white arch bridge. From the bridge, visitors can gaze into a clear tidal trench below, where schools of fish often glide through the shallows. Nearby shell-sand beaches and pebble shores provide perfect settings for beach play, while the gentle sea breeze and sunshine complete the tranquil experience.
In spring, the tide pools are crystal clear and teeming with life. Purple-red fluorescent seaweed dots the rocks, while hermit crabs, small fish, and shrimp scurry between crevices — making this area feel like a vibrant, natural outdoor classroom.
The romance of ‘Lovers’ Bridge’
The elegant white arch bridge nestled between rocky outcrops is known as the “Lovers’ Bridge.” Originally built to help local fishermen access offshore fishing grounds, the bridge gradually gained fame for its romantic appearance. Its graceful form resembles the legendary magpie bridge in the Qixi Festival story of star-crossed lovers. According to local legend, couples who walk hand in hand across the bridge and back are believed to be destined for true love. Today, the bridge stands as a romantic symbol and a must-visit destination for couples.
A year-round destination on the North Coast
From April to May, the trails around Shimen Cave bloom with native Taiwanese lilies and stonecrop, adding a fresh splash of white and green to the landscape. The area is also near other popular attractions such as Baisha Bay Beach, Fugui Cape Lighthouse, the Laomei Green Reef, and the Tiaoshi Coast — all within a short drive, making this a perfect day trip or weekend getaway destination.
Combining dramatic natural beauty, geological wonder, rich cultural history, and ecological richness, Shimen Cave is one of the most iconic coastal attractions near Taipei. Whether you’re visiting in spring for the flowers, in summer for the beach, or in the cooler months to explore the intertidal zone, this site offers an unforgettable connection with Taiwan’s stunning natural landscape.
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