The Greenwich Observatory with its green laser beam can transfigure any night sky. If you decide to cross the Thames via the foot tunnel, make sure you look out for the green ray. You can be on one side of the meridian in a minute, and cross to the other side on the next, without even realising it.

Good, progressive, solid, forward-thinking place. And run by the warmest, most intelligent and inspiring people to be around. Always a humble, fulfilled visit. And whilst in the area, best to visit next door to Hannah Barry's gallery for more wonderful work.

Tate Modern can always be relied on for offering up interesting, challenging exhibits, housed in great architecture and with one of Londons best cultural bookstores. An ever reliable weekend hangout.

Book store on Broadway Market

Looking for books on Sound Art, Photography, Art or Cultural Theory? Then Conor Donlon's bookshop is the place to go. Supplying printed matter for a variety of tastes this delightful shop has a lot to offer. Ranging from fanzines and fashion magazines to books on underground culture, artists writings and sheer bizarre booklets on uncommon sexual practices, this engaging shop has something for everyone. Conor also deals in rare and out of print books and John Waters is a frequent customer. If you come soon you might just be in time to pick up one of John Waters signed copies of: 'Role Models'.