This month marks 125 years since Tower Bridge opened (presumably the first time it opened up, too). In its time, Horace Jones's gothic confection has had narrow-misses with flying daredevils, been leapfrogged by a gung-ho John Wayne and suffered the Fergie-from-The-Black-Eyed-Peas-treatment.
As part of its big birthday celebrations, tickets to Tower Bridge — including access to its museum, glass walkway and engine rooms — will cost just £1.25 per person, on Saturday 29 and Sunday 30 June. Full price tickets normally set you back between £8.80 and £9.80 — so that's a rather sweet deal.
You can't book ahead: just rock up on the day (between 9.30am-5pm) and hope not too many people have cottoned on to the bargain of the month.