The Covent Garden (London) store will hold its grand opening on Saturday, August 7th at 10 a.m., revealing the largest and most expensive store in Apple’s chain, and arguably the chain’s most amazing interior. The store occupies an 1870s building that has been restored and renovated, while retaining most of the original architecture and interior design features. It includes stone from a quarry in Wales, a spiral glass staircase and the usual wood display tables. The retail space will occupy parts of three levels, while Apple corporate offices will occupy the upper floors. The building faces onto one of London’s most impressive and busy squares, with a mix of tourists, locals, street vendors and entertainers. It’s the fourth Apple store in the city, and is about one mile from the existing Regent Street store.