Lucavsala is an island in Daugava upstream from the Old Town. It is mostly covered by small garded plots that were allocated during the Soviet era to city's residents for growing vegetables. The area belongs to the municipality that is willing to sell it to investors. Various schemes have been mooted, including a large casino complex. These are still on the drawing board, in the meantime you can entertain yourself, having fun about the advanced systems of razor wires intented to keep your hands off somebody's else's cucumbers and other forms of small scale technical and architectural creativity. While the place might seem a bit frigthening, I can actually suggest it for a brief stroll. Lucavsala and similar places are good for birdwatching as these little engineering and gardening flights of fancy have created many suitable places for nesting.