For more than four decades, eccentric Brazilian socialite Eva Klabin amassed a vast collection that includes Ming dynasty porcelain, pre-Columbian artifacts, and Old Master works by the likes of Tintoretto. Her collection was already so widely heralded in the seventies that Henry Kissinger was given a 3 a.m. viewing. After her death in 1991, Klabin's mansion, overlooking Lagoa Rodrigo de Freitas, became a museum. Admission is by guided tour only. At 2480 Avda. Epitácio Pessoa; 55-21/2523-3471; evaklabin.org.br.