It's clearly a gadget ad, not a new format or an image ad. The "slideshow" displays offers from the same advertiser.

All the beauty at Google Ads it's that it only text.

Here's the second offer:

http://img95.imageshack.us/img95/511/gadgetadgr5.png

and here's the ad:

http://pagead2.googlesyndication.com/pagead/ads?client=none&adtest=on&format=250x250_as&color_border=000000&color_bg=FFFFFF&color_link=00509F&color_text=000000&&color_url=858585&ad_type=image&url=http%3A%2F%2Fwww.viator.com%2Fvatican

(Thanks, I added an update.)