Esperance Stonehenge is a full-scale replica of the prehistoric monument on Salisbury Plain, built from locally quarried Esperance granite on a farm about 15km from the town. The blocks are the same dimensions as the originals and the circle is laid out to the same plan, right down to the correct astronomical alignments adapted for the Southern Hemisphere.
It's an eccentric thing to find in the Western Australian bush — a granite Stonehenge rising from a flat agricultural landscape, with no other visitors and probably some sheep — but the construction is serious and the effect oddly convincing. The local stone gives the replica a different visual character from the original's blue and sarsen stones, and the surrounding eucalyptus scrub makes clear you are in Australia, not England. Worth a detour if you're interested in the original monument or simply in the kind of grand private project that requires a significant number of large rocks and a great deal of determination.