The Ringworld series

Books currently reviewed in this series:

Ringworld by

An alien recruits three fellow travellers, two human, to visit a newly discovered structure 200 light-years from Earth. The ringworld is vast, surrounding a star it has a surface area of roughly three million Earth-sized planets. Approaching it cautiously, wary of the powerful race it must have taken to build it, they get shot down – Read the rest of this review