Cape Cross has both historic and biological significance and is a popular tourist attraction.The Portuguese navigator, Diego Cão, landed here in 1486 on his second expedition south of the equator and planted as tone cross(padrão) to mark his journey. A replica is visible here today. Inclusive of a second replica,the area has been listed as a National Heritage Site. In the late 1800s, thousands of tons of guano (dried excrement of fish-eating birds used as fertiliser) were collected and exported to Europe. South African (Cape) fur seals were also harvested.