It’s difficult to choose, but here are some of the notable sights in Buenos Aires.
Puerto Madero (photos) began operating as the main commercial port for Buenos Aires in 1897. It is located very near to Plaza de Mayo and the Pink House. It gets its name from its designer, Eduardo Madero. Only 30 years later it was replaced by Puerto Nuevo. For the next 50 years Puerto Madero was left to deteriorate.
The Retiro Station in Buenos Aires is the terminus for three rail lines, Mitre, Belgrano and San Martin. It was opened in 1915. The steel structure was built in Liverpool, England, and assembled in Argentina. It is located adjacent to the Retiro bus terminal, the primary long distance bus station for Buenos Aires.