For your information that link which you posted. All that info has been debunked. You cant see curvature from water and suddenly you saw it on buildings ? Take a telescope zoom in and you can see all those missing parts .
I'm sorry mate but I dont think you did any research yourself except read about a few guys who did. I know people who have done boat to mountain to gas balloon to laser proofs and all found out it was flat. Infact from the time this Ball Earth theory of heliocentrism came forth in 15th century. It has been refuted since. I bet you didnt even know the person who invented the ball earth theory said it might be possible and he was unsure. Suprising how his work got published after he past away :)
Have you ever heard of Disinformation Agents ? I will upload a video on them as well soon.
RE: Flat Earth - True World