Here's one for the wealthy (and slightly nutty) of you.
Erik Sakowski, creator of the truly mighty highestbridges.com website, is organising a 3-week tour of bridges along China's Yangtze river. The itinerary will take in 5 of the world's 10 longest suspension bridges, 5 of the world's 10 longest cable-stayed bridges, 5 of the world's 10 longest arch bridges, and many more superlative-loaded treats for the ambitious pontist.
It's a genuine snip at an all-inclusive US$3,950 (excluding air fares to and from Shanghai), and you just need to read the preview to see how amazing it will be. If that's not convincing enough, spend a good hour looking over Eric's mouth-watering photos from his 2011 China bridge trip. Hopefully he won't mind that I've borrowed one of his 2011 photos below to give you a flavour.