- Las Canteras beach used to be called Playa de Arrecife or Reef Beach after the lava reef that shelters the north end of the beach. The name changed to Las Canteras or Quarry Beach when people started to hack blocks out of the reef to make water filters and provide stone for the cathedral.
- The reef is over two kilometres long and 100,000 years old. It used to reach the shore at the north end of the beach but was quarried away.
- Las Canteras beach used to be a sand spit connecting the La Isleta peninsula to the rest of Gran Canaria. The sea washed over the narrowest part of the spit as recently as the 1920s. Now that the city is in the way the sand level on Las Canteras grows every year.
- The south end of Las Canteras beach has magnetic sand grains. Put a magnet on the sand and you get a ball of black sand. The magnetism is due to the high iron content of the dark grains.
- As well as being magnetic the sand at the south end of Las Canteras beach changes colour every day. Nobody is sure how but you can visit one day and it's golden and come back the next to find the whole beach jet black. We think it's got something to do with the strength of the waves during each high tide.
- The white bridge at the south end of Las Canteras is nicknamed Paquito because people say it looks like a mini version of the Golden Gate Bridge in San Franciso. Paquito is the short form of the Spanish name Franciso.
- The area between Las Canteras beach and the reef is a marine reserve. Fishing is banned and you're not even allowed to pick up seashells on the beach. It's a great place for snorkelling as the fish get bigger and tamer every year. If you surf at the south end of the beach in September, look out for the baby sharks in the waves.
- Agatha Christie stayed in Las Palmas in 1927 and swam at Las Canteras beach. She may even have been the first woman to surf in Europe as she learned the sport in South Africa in 1924.
- Swedish tourists brought the bikini and topless sunbathing to Las Canteras beach in the early 1960s. Until then people swam in full swimsuits that covered the arms and legs. Older Canarians and the Catholic Church took a while to get used to the change.
- The huge wind sculpture at the north end of Las Canteras was one of the last artworks by Lanzarote-born artist Cesar Manrique. He made it in 1991 and died the year afterwards.