Open House • London

In mid-September the public is given free entry for an entire weekend to see more than 800 heritage buildings throughout the capital that are normally off-limits.

It’s the world’s largest architectural festival, featuring walks, talks, and tours to inspire the public about the benefits of great design.  Each year, a quarter of a million people take part.

Boris Johnson said, “No other city in the world brings together so well the historic and the new, or can delight the eye with a range of styles from Corinthian marble to modernist steel.”

Visit: Open City, 18 Ensign St. London E18JD; 020-3006 7008;