Friendship Park, Binational park at US-Mexico border in San Diego, US

Friendship Park is a half-acre binational park within Border Field State Park in San Diego County, California. A tall, square white tower rises above a long, dark metal fence of vertical bars and horizontal rails set on a low concrete base; low white structures stand behind it. The west side opens to the beach and the Pacific Ocean, with Playas de Tijuana to the south and the Tijuana River Estuary to the north.

A stone monument from 1851 marks the original boundary between the two countries following their war. The park was later established in the 1970s as a space for cross-border connections.

The park's name comes from its role as a binational meeting place. Over the decades it hosted yoga classes, religious services, weddings, dances and baptisms. On Children's Day in April, the US government briefly opened a gate in the fence in 2013, 2015 and 2016 so pre-selected divided families could embrace.

Visiting the US section requires advance booking and coordination with Border Patrol agents on designated weekends only. The area is open terrain with minimal facilities, so wear sturdy shoes and bring sun protection.

The steel barrier runs about 300 feet (91 m) into the Pacific, a section rebuilt in late 2011 and early 2012 by the "Surf Fence" Project. It replaced older bars on the beach, so the boundary line now continues past the sand and into the surf.