Okayama rewards travellers who skip the ticket gates: a National Treasure shrine with no admission fee, a free hilltop observatory over the Seto plain, and a burial mound you can climb. Lunch in the arcade runs ¥600–900, and a bike unlocks the whole Kibi Plain.
Riverside park directly opposite the castle keep, open around the clock with no gate and no fee. Benches, a free public toilet and the cleanest ground-level angle on the black tower before the tour buses arrive at ten.
Japan's busiest public library by annual visitors, five minutes on foot from the castle moat. Free entry, free wifi, strong air conditioning and an English-language corner. Open 09:00–19:00 on weekdays, 18:00 at weekends, closed Mondays.
National Treasure shrine at the foot of Mt. Naka-yama with a 360-metre roofed corridor stepping down the hillside. Grounds and corridor are free to enter; the JR Kibi Line from Okayama Station costs ¥240 and takes about 15 minutes.
A 171-metre hill in northern Okayama with a free observation deck looking over the city, the castle and the Seto plain. The paved path from the Science Museum side takes roughly 20 minutes of steady climbing.
A kilometre of covered arcade running north from Omotecho Bridge, mixing ¥100 shops, secondhand bookstores, old bakeries and standing coffee counters. Roofed end to end, so it works as a wet-weather day and costs nothing to walk.
The underground shopping street beneath Okayama Station packs ramen counters, udon stands and set-meal shops into one corridor. Weekday lunch sets with rice and miso soup land between ¥650 and ¥900, and turnover is fast enough that you rarely queue.
An eight-floor mall linked to the station by a covered walkway. The top-floor food court has bowls from ¥500, free seating, water and power sockets, plus a supermarket downstairs selling onigiri at ¥110 for tomorrow's cycling ride.
The basement food floor of Okayama's flagship department store starts discounting from around 18:00, with 20% stickers giving way to half-price on sushi trays, tempura sets and prepared salads before the 19:30 close.
The classic 15 km flat route to Soja runs past shrines, rice paddies and burial mounds on a dedicated path. Rental shops beside Bizen-Ichinomiya Station charge about ¥1,100 per day and allow a one-way drop-off at the Soja end.
A 34-metre Edo-period pagoda standing alone above the rice fields, with free access to the grounds at any hour. It is the postcard image of the Kibi Plain and sits directly on the cycling path, roughly halfway along the route.
The fourth-largest keyhole burial mound in Japan, 350 metres long and built around the fifth century. Unusually, it is open to walk on: a short stairway leads to the summit, with no fence, no ticket and views across the whole plain.
The riverbank path between Kyobashi and Aioi bridges is lined with cherry trees and looks straight back at the castle. Free, flat and lit at night, and the tram from Kyobashi-cho back to the station costs a flat ¥140.