Question

Is "the village reminded me of an old wasps nest", a simile or a metaphor?

Answer 1

A metaphor

Explanation:

In the statement the village is indirectly compared to a an old wasp nest. What the comparison in tells is not explicated.

This comparison is a a metaphor.

If the comparison was a simile words would have been used such as
The village is like an old wasp nest filled with empty houses.
The village is as an old abandoned wasp nest.

As simile is a direct comparison while the statement in the question is an indirect comparison.