Picoto da Melriça is a monument and the geodesic centre of mainland Portugal.

Constructed in 1802, the triangulation station sits on top of the Serra da Melriça, a 592 m (1,942 ft) high mountain range in the municipality of Vila de Rei, offering a 360° view of its surroundings.

Despite being the geodesic centre, it is not the geometric centre of mainland Portugal, which is located in the neighboring Mação.

[1][2][3] Predating the construction of the monument, Francisco António Ciera, a mathematician and cartographer was commanded by Maria I of Portugal to create a triangulation of the Kingdom of Portugal, a job he delegated from 1788 to 1803.

[1] A museum (Museu da Geodesia) was created in 2002 next to the monument.