Exceptional 19th-century seafront palace in the very heart of Cascais, set on a c.3,000 sqm plot with approximately 1,500 sqm of built area across four floors. The property comprises +40 rooms, grand reception areas and historic architectural detail throughout, complemented by private gardens, a swimming pool, expansive terraces and breathtaking 360º views over the Atlantic and the Cascais. Just minutes from the marina and beaches, it offers outstanding potential for transformation into a luxury boutique hotel, an ultra-prime private residence, an exclusive members' club or a high-end events venue. A truly singular trophy off-market asset in one of Portugal's most coveted coastal enclaves.