In Cambridge today

I arrived in Cambridge yesterday evening by train. The train was comfortable and fast; it took only 45 minutes. I feel that the ticket price of 20 pounds each way is a bit steep. I haven't had a chance to explore the town yet, but that's on the agenda for today.
I spent yesterday (until my train here, of course) in London where I looked around at the Barbican centre, which surprised me by not actually having a barbican at all, and then I went down to The Monument and I climbed the 311 stairs to the top and received a certificate certifying that I'd done so. (actually, as far as I'm aware, there was no actual verification process to check if you'd made it to the top or just turned back halfway; the certificate was handed to you upon exit.)

I was fairly lazy during my last few days in Paris because I got sick. I still caught up with a few friends over those days but I didn't explore many places or wander around the city as much as I'd planned to.