The first thing that strikes you at Castricum Bay Beach is the profound silence, broken only by the rhythmic whisper of waves against dark, volcanic sands. This isn't a beach for casual strolls; it's an expedition, a journey to a place where nature remains largely untouched and commands respect. OnlyBeaches rates Castricum Bay Beach an impressive 9.1/10 for its unparalleled expedition value and distinctive coastal identity, placing it firmly in our Tier 1 category.

Nestled on Russia's remote Urup Island, this famous yet hidden cove offers a unique blend of rugged beauty and serene isolation. The sand, a striking contrast of dark volcanic grains, feels firm underfoot, transitioning to smooth pebbles near the water's edge. The bay's protected nature means the waters are typically calm, inviting for a refreshing dip, though the temperature remains bracing even in summer. There are no crashing surf breaks here, but the gentle lapping provides a soothing soundtrack to the dramatic cliff faces that cradle the cove.