The Hotel Nacional Rio is a skyscraper hotel in the São Conrado neighbourhood of Rio de Janeiro, Brazil. The 108-metre, 34-storey building was constructed from 1968 until 1972 and designed by famed architect Oscar Niemeyer, who was considered to be one of the key figures in the development of modern architecture. The hotel closed in 1995 following a steady decline in customers and the proximity to a crime ridden neighborhood. It was restored and reopened in 2017.

The Hotel Nacional Rio was designed by legendary Brazilian architect Oscar Niemeyer in the late 1960s. He originally planned 55 floors for the building, but the owner of the Horsa Hotels network, entrepreneur Jose Tjurs, preferred to build only 34. Hotel Nacional opened in 1972 as a part of the Horsa Hotels network by entrepreneur Jose Tjurs. The 34-story São Conrado hotel was part of push to develop the western part of Rio.

The sleek modernist glass, aluminum and concrete building in the beachfront neighborhood of São Conrado housed a convention center for 2,800 people and a theater for approximately 1,400 spectators where artists such as Liza Minnelli, B.B. King, Chet Baker and James Brown have performed. It featured five restaurants, helicopter air taxi service from its helipad and original artwork and sculpture and played host to the Rio Film Festival in the 1980s. Considered the most modern hotel in Latin America when it opened, it quickly became a Brazilian design icon. The hotel was later renamed Hotel Horsa Nacional Rio.

source: Wikipedia