Tee for two around London's Gherkin.

What's this? It looks like a small scale replica of London's Gherkin made of cake and used as part of a crazy golf course.

And that's exactly what it is. Selfridges has opened a rooftop tea and golf party this summer on top of its Oxford Street store.

The 9-hole, 2,500sqft crazy golf course is designed by British jellymongers and food architects, Sam Bompas and Harry Parr of Bompas & Parr.

The course has been designed to look like a giant display of cakes, one for each hole, representing famous London landmarks. Participants will be challenged to conquer Buckingham Palace (hole #7), St. Paul's Cathedral (hole #4) and Tower Bridge (hole #6), all clad in fondant and piped icing. Even the bunkers are made of cake-stands.

 Now that's crazy.