There have been strange appearances on the London skyline, as seen from the banks of the Thames.
In the last decade, controversial buildings have been popping up like exhibitions at the Tate Modern.
But last weekend, the Shard, Cheese-grater and Walkie-talkie skyscrapers (as they have been affectionately termed) had competition from the Aviva.
The Aviva, a 98 metre-long, gun-mettle blue super cruiser yacht rolled up the Thames to London's Tower Bridge.
The boat owned by, billionaire Joe Lewis, is more often seen cruising around the Caribbean, but on Sunday it appeared at Butlers Wharf.