Sometime in the late 50s, my mother did a river trip down the Thames, based on these old negatives.

I wish I could work out what the under-construction building are/were.

A black and white photograph depicts the Tower Bridge in London as seen from the perspective of individuals on a boat in the river.A large waterfront construction site with cranes and buildings rising in the background, and a barge in the foreground.A group of people are sitting under a canopy on a boat, with another boat on the river and buildings in the background.