Plan to be in Buenos Aires in October. Looking for a travel to Iguasu Falls. Do I need Brazilian visa to be on Brazilian side in Iguasu? What is the best way to get to Iguasu: by plane or perhaps it worth to take bus?

Some nationalities require a visa, notably US and australian citizen, others such as UK an EU nationals do not. I did the trip twice and nobadys seemed to bother with Visas. The bus drivers were telling passengers it was not necessary for a day trip, although I doubt that this is technically correct.

It is a long trip by bus, something like 20 hours, but the buses are very comfortable and efficient (I recommend the "Full Cama service with flat beds). The bus will be about 1/3rd of the cost of the airfare which are exhobitant for foreigners.

We are US citizens and got Brazilian Visas to visit that side of Iguazu Falls.

So, we had absolutely NO WORRIES about illigality or immigration stress. Pricey, but worth it for us as we will be able to re-use that Visa on other trips.

Yellow Fever shots are also recommended, though some young tourists are cavalier about taking it.

The Falls are so spectacular ! Enjoy every minute of it.

~MarnieWDC

We flew from BA to Iguazu. We spent one whole day at the falls and felt it was enough (but it was a full day - we did everything). I dont feel like I missed too much from the Brazillian side, although a couple we meant did a helicoptor tour (that was pretty reasonable) and went to a cool bird sancuary.

If you have time, there is an animal sanctuary on the Argentine side that was really nice. MUST take the boat tour of the falls -its something you'll never forget!

I would strongly recommend you to get Brazilian Visas.
Years ago before my husband an I went to Paraguay for vacation and decided to take a bus crossing to Iguazu Falls. We stayed there for about 5 days and decided to take a bus to come back to Chile via Uruguay.

By the time we bought the tickets for the Uruguay bus my husband got detained for not having Visa. South American can cross borders without visas, but not Americans.

For almost two days I discussed and finally convinced the Police that my husband wasn't there without a Visa intentionally, that had been our mistake of crossing Paraguayan border in a intercomunal Bus.

Hours later they let us know but they charged us with some thousands Uffirs, some amount of brazilian money with interest and were banned of going to Brazil again. My husband has returned to Brazil years later, I haven't, but we both have new passports.