UPDATE: 43 THINGS -- I went over to 43 Things to see what I'm doing and discovered I haven't been good about setting and sticking to goals. (I didn't have to use 43 Things to discover this fact.) Then I tried out the "blog this" option on one of my goals and watched this post automagically appear.
In mid-September, I want to return to London and visit the Tate Modern from top to bottom. That includes the ticketed exhibitions, the bookshop and at least two of the cafes in the building.