The Swallow's Nest (Ukrainian: Ластівчине гніздо, Lastivchyne hnizdo, Russian: Ласточкино гнездo, Lastochkino gnezdo) is a decorative castle located at Gaspra, a small spa town between Yalta and Alupka, in the Crimean Peninsula. It was built between 1911 and 1912, on top of the 40-metre (130 ft) high Aurora Cliff, in a Neo-Gothic design by the Russian architect Leonid Sherwood for the Baltic German oil millionaire Baron von Steingel
The castle overlooks the Cape of Ai-Todor on the Black Sea coast and is located near the remains of the Roman castrum of Charax. The Swallow's Nest is one of the most popular visitor attractions in Crimea, having become 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.
The first building on the Aurora Cliff was constructed for a Russian general circa 1895. The first structure he built was a wooden cottage romantically named the "Castle of Love." Later on, the ownership of the cottage passed to A. K. Tobin, a court doctor to the Russian Tsar.
In 1911, Baron von Steingel, a Baltic German noble who had made a fortune extracting oil in Baku, acquired the timber cottage and within a year had it replaced with the current building called Schwalbennest. The Scots Baronial and Moorish Revival styles had been introduced in the Crimea in the 1820s by Edward Blore, the architect of the Vorontsov Palace (1828–46). Compared to the Alupka and Koreiz palaces, the Swallow's Nest is closer in style to various German fairy-tale inspired castle follies, such as Lichtenstein Castle, Neuschwanstein Castle and Stolzenfels Castle, although its precarious seaside setting on the cliffs draws parallels with the Belém Tower in Portugal, or Miramare Castle on the Gulf of Trieste outside Trieste, Italy.