Eye of London, Singapore Flyers and Eye on Malaysia

See the 4 common picture below:

Singapore Flyers

Eye on Malaysia

London Eye

Eye of Manchester

Whats is the similarity between 4 of it?

- I have been near to those place and never have intention to go in and take a ride. How was that?

- Reason, we also can see the upper view like they see too.

Hehehehe.

Cheers