Observatorio Astronómico de la Universidad de los Andes is a public-facing university observatory in Bogotá’s central campus, with a rotating 4.5-metre dome, principal telescope and ESPARTACO high-resolution spectrograph supporting astronomy teaching, optical stellar spectroscopy and outreach. The operator offers free public observing and student or external-group visits by arrangement; dates and times depend on projects, capacity and weather, and nighttime entry requires advance university authorization. Confirm current schedule and accessibility with Uniandes before travel. Visitor location: Edificio H, Carrera 1 #18A-12, Bogotá, Colombia.