It's a São Paulo mark after you cross a great and arborized valley, you can find the Obelisc close to Ibirapuera park.
The Sao Paulo Obelisk was started in the 1940's but it wasn't finished until 1970. It is dedicated to the 1932 revolution that ushered in the current Constitution. The monument was constructed by an Italian immigrant name Galileo Emendabili.
San Pablo, like other cities in South America such as Buenos Aires or Montevideo has its obelisk, this one if much more modern. It is near the Ibirapuera Park and commemorates the more than 500 combatants of the 32nd constitutionalist revolution. Inside it has a small chapel that can be visited. If you keep walking through the park, you will find the auditorium later.