Casino
Vina del Mar's Casino is the biggest casino in all of Chile. It's the first also. It has what every casino in the world has.
Dress code: no shorts allowed or sandals. Try wearing a shirt and pants. If you go with jeans, you won't be able to go into all the rooms.
It's usually crowded after 8 pm, and it open until 7 am. People from all ages go there and play some money.
The casino now has a 5 star hotel next to it. So if you want luxurious and expensive acomodations, this is the place.
One other thing: the casino itself has some nice gardens which are worth looking at.

A Lagoon, Vina del Mar
The entrance to El Peral Asensor, Cerro Alegre
sand sculptures
double bed