A landmark home in Sydney's affluent suburb of Castlecrag has hit the market.
Called Pangloss, the property at 3 The Bastion is rare in that it contains one of only two Martello towers in the Southern Hemisphere.
Built during the 19th century across the British Empire, Martello towers were used as defensive forts.
Listed by Stewart Gordon of Ray White Lower North Shore, the four-bedroom, two-bathroom home goes to auction on November 24 and has a price guide of $4.8 million.
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Situated along the Castlecrag peninsula, the castle-like home is regal in design with its sandstone exterior, curved walls and manicured hedges that surround the outdoor pool.
Built in 1939, the property occupies one level and consists of two symmetrical wings and the Martello tower.
There's ample space to entertain with an outdoor pool and a circular living room that leads out to the poolside terrace. 
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Interiors are grand and luxurious with Tallowwood floorboards, curved bi-fold doors, chandeliers, plush carpet and a streamlined kitchen with top-notch appliances.
There is also a master suite that leads out onto the poolside terrace and offers natural light in the form of sky lights.
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