Diefenbunker, 3911 Carp Road, ☎ 613-839-0007 (firstname.lastname@example.org), . English tours at 2 PM daily all year around, more on weekends and in the summer. Built at the height of the Cold War as the Central Emergency Government Headquarters, this giant four-story underground bunker reinforced to stand a 5-megaton nuclear blast was designed as the site where Canada's leadership could ride out a nuclear holocaust. Decommissioned in 1994, the site is now run by a dedicated group of volunteers working to preserve and restore it to its glory days in those paranoid days, complete with period maps showing what parts of Canada (and the US) would have faced nuclear doom in the event of World War III. Access by guided tour only (90-120 minutes), so book in advance. Bring a sweater, and no flash photography allowed.$14. edit
"Downtown" Carp amounts to a handful of local spots. You've got your ice cream stand named "Twisty Cream", owned by local entrepreneur Helen Hood, Carp Pizza, a Chinese take-out, and a chicken and potatoes shop. There are some dining out options but your best bet is probably:
The Swan, 108 Falldown Rd., +1 613839-7926. In 2004, two Cordon-Bleu trained chefs turned new owners brought this traditionally styled pub a menu with international fare. An impressive drink selection awaits. Try also, one of their homemade desserts. $12-$25 (not including drinks, tax, or tip).