The Round Church is one of the oldest buildings in Cambridge dating back to 1130 A.D. It was built by the fraternity of the Holy Sepulchre who recently arrived from France and you can see this as they used Norman styles in their work.
Its formal name is Holy Sepulchre. It is one of four round churches in the country and is based on the original Church of the Holy Sepulchre in Jerusalem which was built by the Roman Emperor Constantine in the 4th century.
It originally had a heavy Gothic tower but that collapsed in 1841. The tower was rebuilt with a conical spire to remain true to its Norman origin. The East window was installed in the Victorian times but was later destroyed by a bomb in 1942 so that has since been replaced.
It is a very interesting stop to make and has a wealth of information inside about Cambridge itself. The admission is donation.
All the Best!
American to Britain