Arattu Mandapam, a stone-built pavilion at Shanghumugham Beach in Thiruvananthapuram, holds an enduring place in Kerala's cultural and spiritual life. The structure is used during the arattu ceremony of Sree Padmanabhaswamy Temple, when the deity is brought here for the ritualistic bath as part of temple festivals. Its simple yet striking lines of stone columns rise against the backdrop of the sea, embodying both devotion and timeless architectural charm.

Set against the Arabian Sea, it blends sacred tradition and heritage architecture alongside leisure attractions located nearby like the mermaid sculpture and park on the beach. Shanghumugham itself is among the most popular stretches of coastline near the capital. It is located just eight kilometres from the city centre and close to both Veli Tourist Village and the international airport. The beach is well known for its wide sands, relaxed atmosphere, and spectacular evening skies, when the fading light paints the horizon in vivid hues while the silhouette of the pavilion stands in quiet contrast.

Besides its spiritual importance, the area is also a lively leisure spot for locals and travellers alike. A massive mermaid sculpture dominates one section of the beach, while a children's park and open spaces nearby provide ample spaces for family outings.