The Swallow's Nest is a decorative castle near Yalta on the Crimean peninsula in southern Ukraine. It was built between 1911 and 1912 in Gaspra, on top of 40-metre (130 ft) high Aurora Cliff, to a Neo-Gothic design by the Russian architect Leonid Sherwood. The castle overlooks the Cape of Ai-Todor of the Black Sea and is located near the remnants of the Roman castrum of Charax. Swallow's Nest is one of the most popular visitor attractions in Crimea, becoming the symbol of Crimea's southern coastline.
The building is compact in size, measuring only 20 m (66 ft) long by 10 m (33 ft) wide. Its original design envisioned a foyer, guest room, stairway to the tower, and two bedrooms on two different levels within the tower. The interior of the guest room is decorated with wooden panels; the walls of the rest of the rooms are stuccoed and painted. An observation deck rings the building, providing a view of the sea, and Yalta's distant shoreline.
Owing to its important status as the symbol of the Crimea's southern coast, the Swallow's Nest was featured in several Soviet films. It was used as the setting of Desyat Negrityat, the 1987 Soviet screen version of Agatha Christie's And Then There Were None. The building was also featured in the 1983 Soviet-Polish children's film Mister Blot's Academy as well as in Mio in the Land of Faraway, a 1987 joint production by Swedish, Norwegian, and Soviet film companies.