Can anyone figure out what on earth this giant egg-like thing is, near Acton, Massachusetts? Update: As ever our readers have come to the rescue, and it seems that this is the Annursnac Hill Reservoir, a covered water storage facility…

This is the Foster City sign in (you guessed it) Foster City, California. Founded in the 60s, Foster City is built entirely on landfill in what was previously marshland. Matt Schneider says that during the 1989 Loma Prieta Earthquake the…

Possibly the greatest basketball player of all time, Michael Jordan's 29,000-square-foot estate near Chicago features a basketball court (of course) as well as a tennis court and putting green. Loads more info and pictures here. Bill Gates' 40,000-square-foot mansion in…

My slackness in posting any sights so far this week is entirely the fault of the Edinburgh design agency where I work, who insisted on taking us all to Dublin this past weekend for our Christmas party! Anyway, the Guinness…

The Grande Arche is a modern Parisian monument which mirrors the Arc de Triomphe. From above it has the appearance of a giant cube although it is in fact an arch, there's good panoramas and pictures on From Paris. Thanks:…

On the even years in the month of September, the locals of Marostica, North Italy play human chess on this Giant Chess Board. The event dates back to 1454 when a Lord decided to marry off his two daughters to…