The Osun-Osogbo Sacred Grove occupies forest along the Osun River beside the Yoruba city of Osogbo. It is dedicated to Osun, an oriṣa associated with water, fertility, protection, and prosperity. Oral traditions connect the grove with the city's foundation and with agreements between early settlers and the deity, sustaining a sacred relationship among community, river, forest, and kingship.

Shrines, paths, sculptures, river points, priests' spaces, and ritual clearings support worship and the annual Osun festival. Devotees bring offerings, prayers, music, dance, and procession into the grove. Sacred restrictions helped protect a surviving area of high forest as urban development and farming reduced similar groves elsewhere in Yoruba country.

During the twentieth century, traditional custodians worked with the Austrian-born artist Susanne Wenger and the New Sacred Art movement to repair shrines and create large sculptures in earth, cement, metal, and organic forms. These works are now integral to the landscape, but they are modern interventions within a much older religious tradition, not ancient monuments from the grove's foundation.

Colonial rule, Christian and Muslim expansion, urban growth, pollution, changing authority, and tourism altered the setting and public understanding of the grove. Yoruba religion nevertheless remained active and adaptive. The festival became both a major spiritual event and a public cultural celebration, creating opportunities for continuity while also introducing crowding, commercialization, waste, and pressure on ritual spaces.

UNESCO inscribed the grove on the World Heritage List in 2005. Conservation must protect water quality, forest ecology, shrines, modern sacred art, archaeology, and intangible practice together. Decisions require leadership from priests, devotees, traditional authorities, residents, artists, and environmental specialists. Interpretation should respect living belief and avoid reducing the grove either to a sculpture park or to folklore detached from present worship. The wider urban landscape carries evidence beyond the best-known monument. Streets, water systems, workshops, houses, markets, religious buildings, cemeteries, fields, and transport routes show how different social groups sustained the place. Archives and oral history can recover structures and practices lost to redevelopment, while archaeology tests later memory. Effective conservation must keep historic districts usable for residents rather than preserving façades at the cost of community displacement. Earthquakes, storms, floods, heat, tourism, and changing economies introduce new pressures that require coordinated planning. Traditional building skills, affordable repair, careful adaptive reuse, and public documentation can protect both material fabric and the living knowledge through which it continues to have meaning. Continued study should connect the celebrated features with the wider social and environmental systems that sustained them, ensuring that preservation records evidence of everyday life as carefully as monuments, rulers, and later legends. That broader context remains essential to responsible interpretation and long-term care across changing generations and disciplines.