Madrid Travel Guide: Astronomical Observatory - Observatorio Astronómico

One of Charles III's scientific institutions, the Observatorio was completed after his death in 1790. Beautifully proportioned, it is Madrid's finest neo-classical building, designed by Juan de Villanueva. It still contains a working telescope, which can only be seen by prior request. One room is also open to the public, but only on Fridays at the time of writing, while the building undergoes renovation.

Address C/Alfonso XII 3

Transport Metro Atocha .

Telephone 91 527 01 07

Open Guided tours 11am Fri.

Admission free.