Roberto Coro's photostream  

www.youtube.com/watch?v=8a3UYrtq-B4

Just a very little example of what you can find in this marvellous sunday market that starts from Plaza de Majo and cover a good part of Calle Defensa until Plaza Dorrego

From Wikipedia:

The Puente de la Mujer (Spanish for "Woman's Bridge") is a footbridge in the Puerto Madero district of Buenos Aires, Argentina that spans dock 3 (dique 3). It is of the Cantilever spar cable-stayed bridge type and is also a swing bridge, but somewhat unique in its asymmetrical arrangement. It has a single mast with cables suspending a portion of the bridge which rotates 90 degrees in order to allow water traffic to pass. When it swings to allow watercraft passage the far end comes to a resting point on a stabilizing pylon.

It was designed by Santiago Calatrava and is similar to his Puente del Alamillo and Sundial Bridge at Turtle Bay, but with a forward, rather than a reverse angled cantilever, as is seen in those bridges. The footbridge was donated by Alberto L. González to the City of Buenos Aires in gratitude for 60 years of work in the country. Started in 1998, it was completed on December 20, 2001.