Jonathan Wiggs/Globe Staff

A new mural by Os Gemeos covers the exterior wall of a giant air intake structure on the Rose Fitzgerald Kennedy Greenway.

Geoff Hargadon

The mural is meant to complement a one-room show of Os Gemeos’s work at the Institute of Contemporary Art.

Jonathan Wiggs/Globe Staff

There are three Os Gemeos murals around Boston to go along with the ICA exhibit.

Essdras M Suarez/Globe Staff

Gustavo (left) and Otavio Pandolfo, who are 38-year-old twins from Brazil, worked on a mural along the Greenway last month. The street artists call themselves Os Gemeos.

Essdras M Suarez/Globe Staff

This mural, which Otavio is working on, will take 10 days to complete.

Essdras M Suarez/Globe Staff

The renowned street art duo is better known as Os Gemeos, Portuguese for “the twins.”

Essdras M Suarez/Globe Staff

Gustavo Pandolfo and an assistant used a crane to reach parts of their enormous mural.

Allen Benedikt

Os Musicos, 2008. Wood, speakers and modified organ. 13 x 21 5/8 x 9 inches.

Allen Benedikt

Untitled, 2008. Acrylic and spray paint on wood panel. 110 ¼ x 82 5/8 x 5 7/8 inches.

Allen Benedikt

Back in the Days, 2008. Acrylic, latex, spray paint and sequins on wood panel. 96 x 96 x 5 inches.

Dentro do arco-iris, e assim, 2010. Mixed media, 82 5/8 x 201 1/8 inches.

No Fundo De Mar E Respirar Mas Facil (In The Depth Of The Ocean It’s Easier To Breathe), 2012. Mixed media on panel. 72 7/8 x 108¼ x 4 inches.

Amanheceu De Cabeca Prabaxo (Upside Down Sunrise), 2012. Mixed media on panel. 78¾ x 63 x 5 inches.

Untitled, 2012. Mixed media on canvas. 79 x 63 x 2 inches.

Agradecendo A Chuva (Thanks For Rain), 2012. Mixed media on panel. 92 1/8 x 63 x 13 3/8 inches.