Cannot find any structures such as pyramid, houses, all that

[Cannot find any structures such as pyramid, houses, all that]

Yeah i do have all my settings on the lowest so maybe i have to go close to render them in 

[Cannot find any structures such as pyramid, houses, all that]

I got this game 2 days ago and im loving it ive got 33 hours put in to this world so far but I cannot find any structures ive sailed to 5 islands and found none... I have watched videos of people finding heaps of Structures on one island. (I really dont want to restart this world)