LONDON — A plethora of improbables unfolded on our first day in London, where my daughter and I stayed at an Airbnb flat a few blocks off Elephant and Castle, a major road junction in South London ...

It’s one of the world’s most storied rivers, with sites such as Big Ben, the Houses of Parliament and the Tower of London visible beyond its algae-covered, walled banks. But can one really catch a big ...