Daejeon

Daecheong Dam
Chungcheongbuk-do Cheongwon-gun Munui-myeon Deogyu
Take the 72 or 73.

Large dam on the far north east outskirts of town. Responsible for the Daecheonghosu lake, South Korea's largest.

Ppuri Park
Jangsu Town
Free
Take the 312 or 313 through Jangsu Town, it's the last stop. Alternately, you could hike about 1km down the road south from O-world

A family-oriented park on the far southern outskirts of town. Down by a smallish dam, there are the usual swan boats and the like, but the odd drawcard is the hill covered in stone statues representing local family lineages. Local Koreans no doubt have a great time pouring over these, tracing their roots ppuri, but to the casual observer it's just a curious, if unusual, collection of modern art. A path also leads over a bridge and to the top of the cliff directly to the south where not only is there a pleasant view, but the peak is also littered with a bizarre array of wooden phalli.

National Cemetary
Free
Take the courtesy bus from the National Cemetary Daejeon subway station.

National cemetary for Korea's war heroes and patriots. It's quite beautifully landscaped and surrounded by a ring walking trail. Dress standards apply.

Dunsan Prehistoric Settlement Site
Dunsan-dong
Free
Government Complex Daejeon subway stop. Two blocks north and one block west of the station

When excavating for Dunsan new town in the early 1990s, a bunch of "stone-age" relics were discovered. Prior to the discovery, it was widely believed the region had a rather recent history. At a glance, the site is essentially a very hilly grassy park with scattered reproduction 'prehistoric huts' built over it. However the site provides extensive historical information for visitors. It is open at night and the inside of the huts light up as you approach showing off an interpretation of what was discovered, complete with reproductions of the various farming and domestic tools unearthed.