in a parking lot, or Stop 15 appears - a shop with a month-long lease given to young retailers on Gertrude Street, Fitzroy, named for its whereabouts on the No.86 tram route. ''There's a sense of timeliness, an urgency, with pop-ups that encourages turnover,'' says Kate Vandermeer, co-owner of The SuperCool, a mobile homewares emporium that's had fleeting appearances at hipster cafes but for now runs from the loading dock of a Fitzroy furniture shop. ''It's all about the experience.'' Flagged by social media, pop-ups range from Joost Bakker's recyclable and eco-friendly Greenhouse restaurant (first knocked up on Fed Square before travelling the world) to food trucks (those in the know are never far behind the Taco Truck), and flash-mob performances and start-ups such as Comida Bebe (''pop-up gastro theatre''), which began with a backyard mediaeval spit-roast - don't ask - and has cooked since in public parks, galleries and a cinema. - DJ Walk from the famous harbour to the famous beach Sydney, NSW Travellers never forget this combination of two walks linking the harbour with the beach (though not just any beach). Start at Rose Bay, following the 1.4-kilometre Hermitage Walk along the inner harbour. As the path dips down to a series of coves, there are outstanding water-level views of the yacht-flecked harbour and cityscape. Yet the rocky foreshore is almost monastically quiet and surprisingly bushy, bringing to mind the landscape before colonisation. When the Hermitage Walk ends at Nielsen Park, follow the harbour's contours through the