The Kibiji District (吉備路), a 15-km trail extending from Okayama to Soja, is a scenic cycling path, voted as one of the top 100 cycling paths in the nation. There is no need to bring your own bike, because you can rent your bike upon arrival.
Bike rentals are available near Okayama Station (lower daily cost, however this adds a few extra kilometers you must bike to the start), as well as adjacent to JR station Bizen Ichinomiya (upon exiting the station, the rental area is directly to the right). To reach Bizen-Ichinomiya from Okayama Station, transfer to the 'Local lines' section. Two lines run on this track, so ask an attendant which train to take to Bizen-Ichinomiya if you are not sure. The train ride should only take about 10 minutes.
The rental cost at Bizen-Ichinomiya station is ¥1500 per bicycle per day. You can return the bicycle at Soja station, but this adds an extra ¥500 to the cost. You must return the bicycle to either your start point, or your final station point, by 6pm on the same day, as that is when the rental shop closes (at each end).
The rental shop operators will provide you with a map, although the entire trail is quite well-marked. Signs along the path have "Kibiji District" written on them in English and Japanese.
The sites along the trail are free, so expenses are quite nominal, making the cycling trail a highly affordable way to see a wide variety of cultural sites. The official estimated time to cycle the trail is two hours; however, if you take the time to thoroughly explore the sites, you can easily make it a half-day excursion, perhaps combining it with a visit to some of the other sites in the area.
Although it is a cycling course, it is possible to use the trail for hiking. In order to see all the sites before evening, you should arrive at Bizen Ichinomiya Station no later than 10AM. (It is unlikely that you will be able to see any of the other sites in the area, since it will take most of the day to walk the trail.) Hiking the trail is ambitious, as you will also be walking around the grounds of each of the sites along the way, so make sure to wear appropriate footwear and bring food, because you won't reach the restaurants (which are mainly located in the Soja portion) until late in the day.
後楽園
The name means "Garden of Pleasure After", a reference to a famous Confucian quote stating that a wise ruler must attend to his subjects' needs first and only then attend to his own. Construction started 1687 and was completed 13 years later. Despite slight changes, Korakuen largely keeps its form from the Edo era, with waterfalls, tiny shrines, teahouses, miniature maple forests, a lotus pond, and even a greenhouse filled with orchids and cacti. The rare red-crested white cranes are another notable feature. They are released for flying exhibitions on special occasions throughout the year. The large wooden building called the Enyo-tei was used to host daimyo (feudal lords), Emperor Meiji, and other members of the imperial family. The view from the veranda (usually off-limits to the general public) is considered the best in the park, and the strategic location of trees and hills/mounds in the park act as a natural frame. A local ordinance prevents high-rise buildings that would encroach on this view. The roof of a temple can be seen on the side of the distant Mt. Misaoyama, but it was built to enhance the view from the porch. There are two entrances to the garden: across from the Okayama Prefectural Museum, and across the Moon-Viewing Bridge (月見橋 Tsukimi-bashi).
岡山城 Okayama-jō
Popularly known as Crow Castle (烏城 U-jō), it is so named for its striking black color, rare among Japanese castles (which tend to be white, like neighboring Himeji Castle). Only a few protruding bits and the occasional lucky fish-gargoyle (金の鯱 kinnoshachihoko) are gilded. With the exception of one external turret, the current version dates from 1966, but the outside is much more accurate than most Japanese castle replicas, as the original blueprints were used to rebuild it. In the tower is a museum documenting the castle's history, although English explanations are few and far between. On the first floor of the castle, you can also make your own Bizen pottery for an extra fee.
岡山市立オリエント美術館
An interesting museum of Middle Eastern art. The special exhibit details art and trade between China and Persia. If you can speak conversational Japanese, talk with the friendly docents; they will present some highly interesting explanations and background. However, the dates and areas are clearly marked, and the artifacts themselves are interesting enough that you don't need to have a guide to enjoy them.
岡山県立博物館
An excellent museum with a variety of artifacts excavated from various areas throughout Okayama Prefecture from prehistoric artifacts to the Edo and Meiji Periods. Some highlights of the museum are the famous Bizen swords and Bizen pottery. It's just outside the main entrance to Korakuen, so it's well worth a stop.
岡山県立美術館
A large museum housing approximately 2,000 works by famous artists throughout Okayama Prefecture. The museum's permanent exhibition features art dating back as far as the Muromachi Period (1336-1573), such as work by the priest Sesshu and the swordsman Musashi Miyamoto, as well as Bizen pottery and works by more contemporary artists.
林原美術館
A small museum which houses the private collection of the Ikeda Family, the former Lords of Okayama. The collection features Japanese and Chinese works, primarily calligraphy and scrolls. Pottery, beautiful textiles, samurai armor, and other works may also be on display; however, because the museum is not large enough to display the entire collection at once, the exhibits are rotated often.