Kastelorizo's architecture is defined by its vibrant, colorful neoclassical harborfront houses, often with traditional masonry, wooden floors, gabled roofs, and ornate pediments, reflecting its prosperous past as captain's residences. Key structures include the 14th-century Red Fortress, the Lycian Rock Tomb, and notable 20th-century buildings like the Italian-era Municipal Market and the neoclassical Santrapeia School, alongside historic religious sites, showcasing a blend of local tradition, Ottoman influence, and Italian occupation styles.

Kastelorizo’s beaches are small, serene, and wonderfully untouched, offering deep blue waters and a sense of total calm. With most swimming spots set along rocky shores or reachable by boat, visitors can enjoy refreshing dips in exceptionally clear seas, far from crowds and noise.

Kastelorizo's nature is defined by its rugged, barren beauty, dominated by stunning deep blue waters, dramatic sea caves like the famous Blue Grotto, and rich marine life, offering exceptional diving and snorkeling despite its lack of sandy beaches, creating a tranquil escape with a unique blend of geological wonders and vibrant underwater ecosystems.