Carvalha houses the replica of an old Lagar de Varas where one of the main agricultural activities in the region is invoked: the production of olive oil. In this replica of a mill, which worked through a gear driven by the force of water, it is possible to observe the instruments used in the past in this production and to better understand how all this activity was processed, namely the milling room and the rods area.

According to Father António Lourenço Farinha (1883-1985) in his book “A Sertã eo seu Concelho”, the Alameda da Carvalha is so named because in ancient times a plantation of oak trees was planted there, one of which became famous, not only because of its unusual size, as the trunk had a circumference of 38 palms, but mainly because in its shade a great session of the City Council was held in the mid-14th century, as stated in the respective Book of Records of the Secretariat, a tree that still existed in 1874.

From the end of the nineties of the last century, its requalification began with the construction of the Palace of Justice, inaugurated on March 28, 1993. Later, a replica of an old Lagar de Varas was built, which served for the production of olive oil, the House of Shows and Culture inaugurated on June 24, 2001 and, more recently, in 2005, a statue was inaugurated in honor of Father Manuel Antunes, University Professor and Essayist (1918-1985), born in this village, on the 20th anniversary of his death.

People from Sertã have always had the good taste to carefully preserve this small park, which is the most pleasant place in Sertã. Father Manso de Lima said, in 1730, that it was planted with poplars and oaks, calling it «a noble and spacious entrance» and Friar Cláudio de Menezes, in 1791, «a showy avenue».