The park was designed by French landscaper Paul Vilon and English gardener Barry Parker.
It is officially named Parque Tenente Siqueira Campos in honor of a leader of the 1922 Tenentista movement.
The park contains specimens of tropical trees such as the Pau-Brasil and Jequitibá.
During the 1920s, the land was associated with the Trianon Club, a high-society social hub that stood across the street.
The park serves as an essential ecological island, helping to mitigate the urban heat island effect on Avenida Paulista.
Parque Trianon is a remnant of the Atlantic Forest located in the middle of São Paulo's primary financial district. Established in 1892, it maintains a microclimate significantly cooler than the surrounding concrete urban environment. The park features a dense canopy of native trees and winding unpaved trails that contrast with the high-rise buildings of Avenida Paulista. It serves as a botanical bridge for local bird species migrating through the city. The grounds include traditional sculptures, a fountain, and a dedicated playground area for children. The park's topography is hilly, requiring moderate physical effort for walkers. It is managed as a protected municipal green space to conserve its rare original vegetation. The trails are narrow and often shielded from direct sunlight by the thick foliage.
The elevated bridge crossing the park trail, which frames the forest against the backdrop of skyscrapers.
Bring insect repellent, as the dense forest cover creates a humid environment.
Wear comfortable, closed-toe walking shoes to navigate the uneven, occasionally muddy dirt paths.
Visit during daylight hours to safely navigate the shaded interior trails.
Do not wander into unlit or unpaved zones after sunset for safety reasons.
Stay on marked trails to protect the fragile forest floor vegetation.