The 210 Border Monument is a historic landmark located in the Salton Sea watershed of California, marking the border between the United States and Mexico. The monument was established in 1849 and was originally made of limestone, but was later replaced by a cast iron obelisk in 1900. The monument is located in a remote and desert-like area, offering visitors a chance to experience the natural beauty of the region and learn about the history of the border between the two countries. The monument is also a popular spot for birdwatching, with over 400 different bird species found in the surrounding area.

Visitors to the 210 Border Monument can enjoy breathtaking views of the surrounding landscape and learn about the history of the region through interpretive exhibits and guided tours. The monument is also an important symbol of the ongoing relationship between the United States and Mexico, and offers a unique opportunity to reflect on the complex issues surrounding the border. Additionally, visitors may see unique wildlife such as desert bighorn sheep, coyotes, and rattlesnakes. Overall, the 210 Border Monument offers a fascinating glimpse into the past and present of this important border region, making it a must-see destination for history buffs, outdoor enthusiasts, and anyone interested in the natural beauty of California.