This is "Capital Federal". Buenos Aires is a province but also is the name for the city located within the province. kinda like the whole New York , New York thing. it's the capital and by far the largest city in the country. i heard it's the largest city in the southern hemisphere, i believe it too. it's HUGE. there were about 60 missionaries or so just in the big city covering millions and millions of residents. it's way crowded. a lot of the tall buildings you see here are not businesses but apartments.
The tower you see is called "El Obelisco" it's a monument they stuck in the middle of the city. the avenue leading into it is La Avenida 9 de Julio. it's the widest avenue in the world. it's a pain the butt trying to cross it.
These colorful buildings belong to what is called "El Caminito". it' s probably the biggest tourist attraction in the city. it has an interesting story. it's a village located in a port. back in the day this was an area full of prostitutes and transvestites... gross! but now because of the colorful buildings it's turned into a tourist attraction. the tranis and whores have moved a little further inland since then. on a normal day the streets are full of vendors, artists, musicians, and tango dancers. it's actually pretty nice.