We recently took advantage of the unseasonably fine Scottish weather to visit Kenmore. There we saw a splendid example of a crannog, or ancient loch dwelling, reconstructed in situ.
Apparently, the name (somewhat unimaginatively) means "timber structure", a fact which is missing from both Wikipedia and the excellent Time Team site.
The setting is very dramatic, and reminds us of the Iron Age penchant for conspicuous deployment of labour and consumption of resources.