Cocoa House Ibadan (first skyscraper in sub-Saharan Africa, 1965); University of Ibadan (first Nigerian university, 1948); International Institute of Tropical Agriculture (IITA); Trans-Wonderland amusement park; Bower's Tower
Oyo State · Sub-category
Tourist Attractions
Methodology
Tier 1 · primary
Courts. Gazettes. National archives.
Tier 2 · corroborating
OCCRP. HRW. BudgIT. TheCable.
Tier 4 · tertiary, flagged
Wikipedia only where primary is pending. Always labelled.