London Thames walk with #londoneye The London Eye on the left of the picture, was opened in 1999. And has a revenue of at least 29 million a year.
From what I remember it was originally intended to be a short-term attraction, but thereafter it was heavily supported by various London mayors. Specifically #KenLivingstone . Who at one stage had to threaten to compulsorily purchase the land in order that it remain. After the South Bank Centre, which is a registered charity, tried to increase the rent for the land to £2.5 million.
It’s been called various things - the “Merlin Entertainments London Eye” at one point, then simply the London Eye. It’s presently sponsored by Coca Cola.