Mike B.
Yelp
if you're in Tigre and have a little time to kill, the Museo de Arte is a nice little place to check out - while not a destination, you'll likely pass it if walking down Paseo Victoria anyway.
the art collection is small and forgettable, but the architecture of the building itself (The Tigre Club) is far more impressive, a mix of French and Italian styles. formerly a casino and social club, the long terrace overlooking the water is a great place to relax, catch a cool breeze, and get some pretty cool views. the gardens are well-kept and worth looking at as well.
admission is dirt cheap - the most recent info I could find says it's 20 pesos.