We are taking the 12:00pm express ferry from Buenos Aires to Colonia.
Later that day we are taking the 5:00pm ferry from Colonia to Buenos Aires.
Our Buquebus tickets have been booked already.
I just realized today that Colonia is 1 hour ahead in time from Buenos Aires.
That means that we will only have 3 hours in Colonia (including time needed to get from and to the terminal).
Any suggestions for what to do to make the most of our short trip there?