Mata de Santa Genebra, Nature reserve in Paulínia, Brazil.

Mata de Santa Genebra is a 251.77-hectare forest remnant of the Atlantic Forest in Campinas, São Paulo, with its western edge forming the border with Paulínia. It is a semi-deciduous seasonal forest with 85% semi-deciduous and 15% swamp forest, and trees such as jequitibá-rosa and peroba-rosa reaching over 25 metres. The reserve is an ARIE created in 1985 and is the largest urban forest in the Campinas Metropolitan Region.

The area was originally part of a coffee plantation and was later purchased and protected by a local family. The forest remained intact while the surrounding region developed for other purposes.

The forest serves as a learning space for natural science studies and draws researchers from nearby universities. Visitors can observe scientific fieldwork happening on-site and understand the forest's role in advancing knowledge.

The site is accessible year-round and offers trails for exploring the forest at a leisurely pace. Visitors should bring appropriate clothing and footwear since the terrain can be uneven and damp.

More than 150 bird species have been catalogued here, among them the otiê-do-mato-grosso, the rendeira and the tangará. The reserve also keeps a butterfly house, installed in 2000, with a rearing room, a butterfly enclosure and a garden of plants that feed the caterpillars.