I'm Jamie Wardley from Sand in Your Eye and I'm helping to make an ultimate castle with English Heritage.
I'm also here to give you some top tips.
Tip number one: with dry sand you can't make anything.
Sand has to be wet, and then you can make beautiful things.
Tip number two: to make a castle you need to have a strong foundation so for that I'm going to build a volcano.
Ta-da!
When you've got your volcano then what you need to do is just get a bucket of water and pour the water into it.
Because you've made this nice little rim the water's not going to go down the sides.
Then all we do is use your fingers to press on it like you're playing the piano.
When you're doing that it actually make the sand go really really hard.
