坐火车。Regular trains run from London King's Cross Tube Station and Liverpool Street) to Cambridge. The fastest "Cambridge Cruiser" services to and from King's Cross run nonstop and take under 50 minutes, generally departing at :15 and :45 minutes after the hour. "Semi-fast" services stop at a few intermediate stations and take about 65 minutes, slower stopping trains may take up to 90 minutes. Try to avoid taking a train with more than 8 stops listed between Cambridge and London Kings Cross to avoid the slowest trains. Trains to and from London Liverpool Street, for which cheaper tickets are sometimes available, all take about 75 minutes.
Cambridge-London services are run by two companies: First Capital Connect (customer service phone 0845 026 4700) for King's Cross services and National Express East Anglia (customer service phone 0845 600 7245) for Liverpool Street services. Timetables are available on their web sites. You may want to buy tickets on their websites ahead. Prepaid tickets can be obtained from ticket machines at Kings Cross.
Once in Cambridge, you can ride bus Stagecoach. 'Stagecoach' operate a daily network of frequent bus routes around the city and also to nearby towns and villages. Frequent 'Citi' routes 1, 3 & 7 (All Stagecoach buses) serve Cambridge rail station to/from the city centre. For route maps and timetables: www.stagecoachbus.com/cambridge
Cambridge is mostly pedestrian-friendly - most sights can be easily reached on foot and much of the central area is traffic-free.
剑桥大学前面是条街，后面是条河，河后面是连片的草坪，加上600年的房子，非常令人印象深刻。学院和学院间是隔开的。You want to see King’s College, Queen’s College and Trinity College where Issac Newton studied and taught.
One day round trip from London to Cambridge is worth it.