Gold

Crashed Ship Site
The Crashed Ship Site allows you to add 5% to each of the stats / bonuses of each of your newly built ships per level of the Crashed Ship Site. And it does this without any additional cost to your ships, by allowing you to harvest alien technology from the crashed ship.
Gratch's Gauntlet
Thought to be one way the Great Race protected themselves from enemy agents.
Kalavian Ruins
The Kalavian Ruins were left behind by the Great Race that once inhabited the Lacuna Expanse. No one knows exactly what did it do or was designed to do, but it does resemble an ancient theatre. Anyway, they still hold great mystery and wonder today, attracting tourists, while bringing a sense of pride for citizens. If you were to find the Ruins on your planet, they would greatly increase the happiness of your citizens.
Oracle of Anid
The all seeing eye of the Great Race, that allowed them to keep tabs on their enemies. It allows viewing of nearby star systems from a planet without the use of a probe, like a telescope.