Puerto Madryn
by TinyTuck
Puerto Madryn is the little town outside of the Península Valdés nature reserve, and that's probably where you will be staying.
It's a pleasant little sea town with a choice of accomodations, restaurants, souvenir shops (I personally thought they had wunderful souvenirs - everything with animals!), large supermarkets... It's ok to stay here for 2-3 days.
Sunglasses needed
by Boxerworld
It's windy so be careful with the sun during the summer: you can get sunburnt easily without realizing it. You need a camera with a long zoom if you want to take great photos of the penguins, elephant seals etc. A wide angle converter is helpful for landscape photos. Same for a polarizer and a UV filter. The light is too bright and it can hurt your eyes badly, so don't forget your sunglasses. I traveled in many places and it was the first time I had to buy sunglasses because of the strong light. If you wear lens, it would be better not to use them because of the wind and the sand.
Ecocentro
by msocolin
The Ecocentro opened its doors in 2000. Its located at the edge of a cliff, looking at the sea. The Ecocentro is a "museum" dedicated to showing the fauna of Peninsula Valdes. It's a great place to learn about the local fauna, its habits, etc. There are also auditoriums where you can hear dissertations on different topics.
RESERVA NATURAL PENINSULA VALDES
by Orkaena
The whole Peninsula Valdes is a huge Natural Reservation, and if you want to get a complete idea about it you'll need three or four days wandering in there, so, to be surprised by the guanacos (a camel cousin) armadillos, seal colonies, sea Lions colonies, seagulls, albatros, right whales, orkas, dolphins, penguins, etc..
The boundless impression is strong, those plain steppes and the blue horizon are feelings that you'll never forget.
Of course you'll pay a fee (cheap indeed) and you can get reservations in some of the hotels or estancias of the Peninsula. But do it with enough time in advance, there aren't too many accomodations facilities here.
Pinguinera de Caleta Valdes
by Maggies
There is a pinguins' colony on Caleta Valdes but it's nothing comparing to Punta Tombo. Sure it's a great stop along Peninsula Valdes circuit and the view is beautiful but there are not that many pinguins and you can't get close to them unless they come up the dune close to you.