The University of Cambridge is rich in history - its famous Colleges and University buildings attract visitors from all over the world. But the University's museums and collections also hold many treasures which give an exciting insight into some of the scholarly activities, both past and present, of the University's academics and students. The University of Cambridge is one of the oldest universities in the world and one of the largest in the United Kingdom. Its reputation for outstanding academic achievement is known world-wide and reflects the intellectual achievement of its students, as well as the world-class original research carried out by the staff of the University and the Colleges. Its reputation is endorsed by the Quality Assurance Agency and by other external reviewers of learning and teaching, such as External Examiners. These high standards are the result of both the learning opportunities offered at Cambridge and by its extensive resources, including libraries, museums and other collections. Teaching consists not only of lectures, seminars and practical classes led by people who are world experts in their field, but also more personalised teaching arranged through the Colleges.