The traditional architecture of Hydra is impressive and unique, with several mansions that particularly stand out. Two have been turned into museums, specifically the Manor of Lazaros Kountouriotis and Pavlos Kountouriotis.
A section of the School of Fine Arts is housed within the Tobazi family mansion, while the elderly home can be found within the former residence of the Kriezi family. The well-known Marine Merchant School is located in the Manor of Tsamados, while other well-preserved mansions include those of Gorogianni, Voulgari, Boundouri, Votsi and Oikonomou families, respectively.