Best things to do in Cambridge, including free and rainy-day options

Cambridge is small enough to cover on foot in a day and rich enough to fill two. The core is the old colleges along the Cam, the Backs behind them, and the market square in the middle. Start early, walk the Backs while it is quiet, then pick one paid interior — King's College Chapel is the obvious one — and one museum for the afternoon.

If you have only a few hours, skip the queues and do the free circuit: Trinity Street, the Backs, Silver Street bridge and the river paths. If you have a full day, add a punt and one museum. If it rains, swap the punt for the Fitzwilliam and the chapel.

The Backs are the strip of lawns, bridges and college grounds along the Cam behind the main colleges. Walking them is free and it is the single best thing to do in Cambridge. Go before 10am if you can: by mid-morning the paths fill with groups and the bridges become a queue. The classic loop runs from Magdalene Bridge along the river to Silver Street and back through the streets, passing Trinity, St John's, King's and Queens' along the way.

King's College Chapel is the interior most visitors pay for, and it is worth it for the fan vaulting and, in term time, evensong. Entry is charged and hours vary with services and the academic calendar, so check the college's own page the day before. Other colleges open their courts to visitors at set times and for a fee, and several close entirely during exams — again, check before you plan a day around one.

Punting is the other thing people come for. A chauffeured shared punt takes about 45 minutes and covers the stretch past the colleges; self-hire boats are cheaper per group but you do the steering, and first-timers usually drift into the bank at least once. Book in the morning for an afternoon slot in summer, and expect the river to be busiest on weekend afternoons.

For rain, the Fitzwilliam Museum is the strongest single answer: free entry, a large collection and a café, a short walk south of the centre. The university museums — Whipple (science), Sedgwick (earth sciences) and the Museum of Archaeology and Anthropology — are free and clustered together, which makes them an easy wet-afternoon pair. King's College Chapel also works in rain, though you may queue.

Outside the colleges, the Botanic Garden is a paid, calm couple of hours in spring and summer, and the market square is the place to eat something quick between sights. If you want a half-day out, Ely is a short train ride away with a cathedral and a riverside walk.

Cambridge can be done very cheaply. Walking the Backs, the river paths, the market and most churches costs nothing, and the main museums are free. The money goes on three things: college and chapel entries, punting, and food. Budget roughly £10–20 per person for a shared punt and a similar range for a chapel ticket, both 2026 estimates — check current prices before you commit.

If you are watching spend, do the free circuit in the morning, eat at the market, and pick one paid interior rather than three. A self-hire punt split between four people usually works out cheaper per head than shared chauffeured seats, provided someone in the group is willing to steer.