Gramvousa Island, located near Crete's northwestern coast, is accessible via boat trips from Kissamos, about 40 km west of Chania. The island is famed for its 16th-century Venetian fortress, offering panoramic views of the turquoise waters and Balos Lagoon. Visitors often hike to the fortress, explore shipwrecks along the shore, and swim in the crystal-clear waters. Gramvousa is a popular stop on excursions combining it with Balos Lagoon.