For any $n \in \mathbb{N}$ I want to compute all path connected and locally path connected topological spaces $X$ (up to homotopy equivalence) whose fundamental group is $\mathbb{Z}/n\mathbb{Z}$. Actually for any prime $p$ I know the construction of the lens space with fundamental group $\mathbb{Z}/p\mathbb{Z}$. But are there any other spaces with $\mathbb{Z}/p\mathbb{Z}$ as it's fundamental group (which are not homotopy equivalent)? And what about any natural number $n$ instead of only primes $p$?
Thanks in advance.
If $\pi_1(X) = \mathbb{Z}/n\mathbb{Z}$, then for any simply connected space $Y$, $\pi_1(X\times Y) = \pi_1(X) = \mathbb{Z}/n\mathbb{Z}$.