Achipse Fortress, Medieval fortress ruins in Krasnaya Polyana, Russia.

Achipse Fortress is an early medieval archaeological site on a mountain ridge where the Achipse River flows into the Mzymta, north of Esto-Sadok in the Adler district of Sochi, Krasnodar Krai. It is the largest structure of its kind in the Krasnaya Polyana area. Excavations yielded numerous fragments of ceramic and glass vessels and some metal objects.

The fortress dates from the 7th to 10th centuries, an early medieval site on the ridge where the Achipse meets the Mzymta. It is the largest structure of its kind in the Krasnaya Polyana area. Excavations uncovered numerous fragments of pottery and glassware, along with metal objects.

Excavations at Achipse Fortress yielded numerous fragments of pottery and glass vessels along with individual metal objects, now the main evidence of life at the site. The finds come from the early medieval layers of the 7th to 10th centuries. Researchers D. E. Vasilenko and A. N. Medved have studied the monument's potential for cultural tourism.

The site is accessible via a circular hiking trail that begins from Berezovaya Street and takes about two hours to complete. The path winds through forest and is clearly marked, making it straightforward for visitors to navigate without getting lost.

From the ruins, visitors enjoy a wide view over the point where the two rivers meet and merge together. The elevated position that once provided defense also afforded an expansive vista across the surrounding landscape.