Kolkata is probably the only metro city in India where many colonial-era homes are still around. Such houses often have interesting memorablia that the owners have collected over decades, and want to sell off. This stash often lands up in the auction houses around the Park Street area, for instance at The Russell Exchange. This iconic antique store rubs shoulders with decades-old Chinese dry cleaning joints, and pubs and eateries from the 1960s. You can just dive in or attend the weekend auctions where they sell off anything from record players, cameras and typewriters to colonial-era gas lamps, marble statues, rare lithographs, and glass decanters. Read more about it here.