This Week: Must-See Arts in the City Slideshow

Christer Strömholm's mid-century record of Paris's transsexual street walkers goes on view at the ICP. Seen here: 'Pepita,' from 1963.

Strömholm is not terribly well-known outside his native Sweden, but the series on transsexuals was a cult favorite when it was published in book form. 'Little Christer,' from 1955, is shown above.

In his pictures, Strömholm captures moments of glamour and intimacy -- as in the photograph 'Suzannah and Sylvia,' from 1962.

Courtesy of the artist and Andrew Edlin Gallery

This photo doesn't begin to convey the rawness of Brent Green's installation at Andrew Edlin Gallery, which features an animated film that can only be viewed through polarized film.

Courtesy of the artist and Andrew Edlin Gallery

Green's narrated animation explores issues of history and fate -- all of it opening with the idea of a Russian woman being asked to sew a spacesuit for a dog.

Carolina A. Miranda

Another more portable piece by Green at the front of the gallery plays the same animation -- albeit in a different format.

Carolina A. Miranda

At the Park Avenue Armory: The artist Tom Sachs sits before his Mission Control panel for the installation 'Space Program: Mars.'

Photo by James Ewing. Courtesy the artist, Park Avenue Armory & Creative Time

Sachs transforms an old Winnebago into a 'Mobile Quarantine Facility,' complete with spacesuits and other hand-crafted gear.

Photo by Genevieve Hanson, NYC. Courtesy the artist, Park Avenue Armory & Creative Time

A member of the crew performs tasks related to Sachs' Mars mission. There will be public demonstrations throughout the course of the installation.

Photo by Genevieve Hanson, NYC. Courtesy the artist, Park Avenue Armory & Creative Time

One of the most impressive pieces in the exhibit is Sachs' full-scale reproduction of a Landing Excursion Model.

Photography by Hyla Skopitz, The Photograph Studio, The Metropolitan Museum of Art

At the Met: Saraceno's 'Cloud City' is debuting at the roof garden. The various transparent panels and mirrored surfaces scramble a viewer's sense of balance.