A bit of Scandinavia has landed in Argentina. Built into a former warehouse, Olsen soars to churchlike proportions, with a mezzanine overlooking the main dining area. The interior, complete with a central round metal fireplace, has a 1960s feel, with blond woods, straight lines, and funky dish settings. A patio garden with a metal sculpture fountain is an extremely tranquil space. Olsen is very popular with tourists and locals alike, and most of the extremely attractive staff members speak English. Starters are fun and meant to be shared, such as an excellent selection of bagels, tiny pancakes, smoked salmon, smoked herring, caviar, and flavored cheeses and butters. Fish is the main point of this place, and a few of the meat dishes, though flavorful, tend to be on the dry side. Many people come just for the bar, and there is an enormous vodka selection kept in special super-cold freezers. Sunday brunch is at 10am.