Location: São Francisco Xavier, São Paulo state, Brazil
Price: $11.5 million This 41.5-acre estate includes a 34,000-square-foot mansion called the "Grid House." The wood-and-stone house has eight bedrooms, a guest house, sauna, tennis court and outdoor kitchen. The property is in a mountainous area where large stones are surrounded by Araucaria trees. The listing agent said that the owner has enjoyed the house but is planning to spend his retirement traveling the world. Agent: Luiza Cazarin, AxPe Imóveis Especiais, Christie's International Real Estate. View the full listing.
Previously: A Mathematician's Music Hall Write to Andrea López Cruzado at andrea.lopez@dowjones.com