Kastelia Beach in the village of Amoopi (Karpathos) is a hidden gem celebrated for its “untouched natural beauty” and exceptional snorkeling conditions.

Atmosphere & Vibe

• Tranquil & Secluded: Often described as a “secluded paradise,” Kastelia is tucked away behind rugged cliffs, offering a much quieter experience than the more central beaches in Amoopi. It consists of two small, distinct coves separated by a rocky peninsula.
• Wind-Sheltered: One of its standout features is the natural shelter provided by the surrounding sandstone cliffs. Reviewers note that when winds are strong elsewhere on the island, the waters at Kastelia often remain calm.
• Laid-Back: Since it is less developed than the main village beaches, it retains an “unattended” and raw Mediterranean vibe.

Water & Shore Quality

• A Snorkeler’s Dream: The water is legendary for its crystal-clear turquoise and emerald hues. Many reviewers consider it to have some of the best snorkeling in Greece, with vibrant marine life and fascinating underwater rocky formations.
• Pebbly Surface: There is no soft sand here; the shore is made of white pebbles and coarse sand. The seabed is also rocky and deepens relatively quickly, reaching 4–5 meters depth just offshore.
• Essential Gear: Because of the pebbles and rocks (and the occasional presence of lionfish), visitors strongly recommend wearing water shoes.

Facilities & Services

• Minimal Organization: The larger part of the beach (about 40m long) is slightly organized with a limited number of sunbeds and umbrellas (typically around €15 per set). These fill up quickly, so arriving before 10:00 AM is recommended.
• No On-Site Canteen: There are no food or drink facilities directly on the sand. While the central restaurants of Amoopi are a 5–10 minute walk away, most reviewers advise bringing your own water and snacks.
• Limited Natural Shade: While the cliffs offer some shade, it is limited, especially in the afternoon.

Family Friendliness

• Better for Older Kids: While families do visit, the rocky seabed and quick deepening of the water make it less ideal for toddlers compared to the nearby sandy Megali Amoopi Beach. It is, however, an exciting spot for older children who enjoy exploring with a mask and fins.

Access

• A Short Walk: Accessible by car with a small parking area above the beach. From the parking lot, you follow a concrete path or stairs down the cliffside to reach the shore.

Summary: Kastelia Beach is perfect for travelers looking to escape the crowds and spend hours underwater. It’s a “must-visit” for snorkeling enthusiasts staying on the east coast of Karpathos.