Galabedda Biso Pokuna is a historical site in Monaragala, Sri Lanka, known for its ancient ruins and archaeological significance. "Galabedda" refers to the village where the site is located, while "Biso Pokuna" translates to "Queen’s Pond" in English.

The site is believed to date back to the Anuradhapura period (3rd century BC to 10th century AD) of Sri Lankan history, which are considered architectural marvels of ancient Sri Lanka.

Galabedda Biso Pokuna is a testament to the advanced architectural and hydraulic engineering skills of ancient Sri Lankans. The pond is noteworthy for its sophisticated design.

Today, Galabedda Biso Pokuna stands as a heritage site, attracting tourists and historians interested in exploring Sri Lanka's rich cultural and historical past.