Ballgame court, Monte Alban,  Oaxaca, Mexico.

Ballgame court, Monte Alban, Oaxaca, Mexico.

  View from the South Platform with the Main Plaza and the Palace on the right, Monte Alban,  Oaxaca, Mexico.

View from the South Platform with the Main Plaza and the Palace on the right, Monte Alban, Oaxaca, Mexico.

  The impressive stairs leading up to the South Platform, Monte Alban, Oaxaca, Mexico.

The impressive stairs leading up to the South Platform, Monte Alban, Oaxaca, Mexico.

  View from the South Platform with the Main Plaza and the astronomical observation in front, Monte Alban,  Oaxaca, Mexico.

View from the South Platform with the Main Plaza and the astronomical observation in front, Monte Alban, Oaxaca, Mexico.

  Stele at the west side of the South Platform, Monte Alban, Oaxaca, Mexico.

Stele at the west side of the South Platform, Monte Alban, Oaxaca, Mexico.

  Building J has astronomical significance, Monte Alban,  Oaxaca, Mexico.

Building J has astronomical significance, Monte Alban, Oaxaca, Mexico.

  Building J had tunnels inside, some with reliefs like those on the outside, Monte Alban,  Oaxaca, Mexico.

Building J had tunnels inside, some with reliefs like those on the outside, Monte Alban, Oaxaca, Mexico.

  View from the South Platform over the Building  M, the south wall of the patio of the Danzantes Building, Monte Alban,  Oaxaca, Mexico.

View from the South Platform over the Building  M, the south wall of the patio of the Danzantes Building, Monte Alban, Oaxaca, Mexico.

  The Building of the Danzantes with reliefs of the so called dancers, Monte Alban,  Oaxaca, Mexico.

The Building of the Danzantes with reliefs of the so called dancers, Monte Alban, Oaxaca, Mexico.

  Reliefs of the Danzantes (Dancers), Monte Alban,  Oaxaca, Mexico.

Reliefs of the Danzantes (Dancers), Monte Alban, Oaxaca, Mexico.

  Inside Temple of the Dancers are further reliefs of danzantes, Monte Alban,  Oaxaca, Mexico.

Inside Temple of the Dancers are further reliefs of danzantes, Monte Alban, Oaxaca, Mexico.

  Building IV close to the North Platform, Monte Alban,  Oaxaca, Mexico.

Building IV close to the North Platform, Monte Alban, Oaxaca, Mexico.

  Stele 18 is the oldest and tallest (5.8 meters) found. It is believed that it was an astronomical instrument. On the eastern side are two glyphs, one a water sign. Incisions on the western side may relate to a calendar, Monte Alban,  Oaxaca, Mexico.

Stele 18 is the oldest and tallest (5.8 meters) found. It is believed that it was an astronomical instrument. On the eastern side are two glyphs, one a water sign. Incisions on the western side may relate to a calendar, Monte Alban, Oaxaca, Mexico.

  Overview over Building IV from the North Platform, Monte Alban,  Oaxaca, Mexico.

Overview over Building IV from the North Platform, Monte Alban, Oaxaca, Mexico.

  The North Platform, Monte Alban,  Oaxaca, Mexico.

The North Platform, Monte Alban, Oaxaca, Mexico.

  View from the North Platform to the south with the Main Plaza, The South Platform can be seen in the distance. Monte Alban,  Oaxaca, Mexico.

View from the North Platform to the south with the Main Plaza, The South Platform can be seen in the distance. Monte Alban, Oaxaca, Mexico.

  View from the North Platform over the Main Plaza, Monte Alban,  Oaxaca, Mexico.

View from the North Platform over the Main Plaza, Monte Alban, Oaxaca, Mexico.

  Reliefs inside the North Platform, Monte Alban,  Oaxaca, Mexico.

Reliefs inside the North Platform, Monte Alban, Oaxaca, Mexico.

  Wheelchair access at the North Platform close to the entrance to the site, Monte Alban,  Oaxaca, Mexico.

Wheelchair access at the North Platform close to the entrance to the site, Monte Alban, Oaxaca, Mexico.

  UNESCO sign from December 1987 at the entrance to the site, Monte Alban,  Oaxaca, Mexico.

UNESCO sign from December 1987 at the entrance to the site, Monte Alban, Oaxaca, Mexico.