I made a quick, incomplete, but still satisfying visit to the Tate Modern at the end of a long day. The gallery has the benefit of being open late (until 10:00 p.m. the date I visited) and free. 

I made a quick dash through the galleries and stumbled across the Learning Centre in the basement level which has a good collection of books and archival materials, including the original bid documents for the building.

I must make a return visit, as there’s much more to experience, especially with the new wing about to open.