Lake Biwa and Hikone Castle: Shiga's Scenic Heartland

Published October 15, 2026 at 11:15 AM JST | By Tokyo Paul

Just northeast of Kyoto, a vast sheet of blue water stretches across the heart of Shiga Prefecture. This is Lake Biwa, the largest freshwater lake in Japan and a place that has inspired poets, painters and travelers for more than a thousand years. On its eastern shore stands Hikone Castle, one of the finest historic castles in the country, and a short distance away you can wander canals lined with old merchant houses. This guide explains what makes Lake Biwa special, how to enjoy Hikone Castle, what to see in nearby Omihachiman, and how to plan a calm, rewarding trip.

Lake Biwa: Japan's Great Lake

Lake Biwa lies entirely within Shiga Prefecture and covers about 670 square kilometers. Its average depth is around 41 meters, and the deepest point reaches roughly 104 meters. The lake is very old, formed by tectonic movement more than four million years ago, and it is estimated to be the thirteenth oldest lake in the world. Such an ancient age has allowed an impressive variety of life to develop. More than a thousand species have been recorded, including about sixty found nowhere else, and dozens of native fish live in its waters.

The name Biwa is generally linked to the lake's shape, which resembles the biwa, a traditional stringed instrument. Earlier names included Aumi and Nio no Umi. In 1993 the lake was recognized as a Ramsar wetland, a sign of its importance for nature and birds. It also plays a huge practical role, supplying drinking water to roughly fifteen million people in the Kansai region. A canal built in the late 1890s, the Lake Biwa Canal, helped revive Kyoto's industry.

Culturally, the lake is a gentle presence in Japanese art and literature. Pearl farming and fishing have long been part of local life, and Chikubu Island, one of the lake's three islands, is associated with Benzaiten, a goddess. The lake offers something for every pace of travel, from boat trips to lakeside walks and cycling along its shores.

The Eight Views of Omi

A classic way to appreciate the lake is through the Eight Views of Omi, a set of famous scenes around its southern end. The idea was inspired by a Chinese set of eight landscapes that reached Japan in the fourteenth and fifteenth centuries, and the artist Utagawa Hiroshige depicted the views in several well-known woodblock print series. Each view pairs a place with a mood: returning sails at Yabase, evening glow at Seta, autumn moon at Ishiyama Temple, clear breeze at Awazu, evening bell at Mii-dera, evening rain at Karasaki, descending geese at Katata and evening snow on the Hira mountains.

Visiting these places today is a lovely way to slow down and think like a painter. Some, such as Ishiyama Temple and Mii-dera, are historic temples with their own beauty, while others are simple shoreline spots where you can sit and watch the light change. Even without a full tour, learning the names adds a poetic layer to any walk beside the water.

The lake is also associated with events that celebrate its spirit, such as the Birdman Rally, a yearly contest where teams launch homemade human-powered gliders into the air. It is a cheerful reminder that Lake Biwa is as much about play as it is about tradition.

Hikone Castle: A National Treasure

On the eastern shore stands Hikone Castle, whose main keep is designated a National Treasure. Construction began in 1603 under Ii Naomasa, a trusted general of Tokugawa Ieyasu, and the castle was completed in 1622 by his son, Ii Naokatsu. The Ii clan then ruled the Hikone Domain until the nineteenth century. Today it is one of only twelve castles in Japan whose original keep survives, which makes it a rare chance to walk through authentic Edo period architecture.

The keep looks compact and sturdy, rising three stories. The keep is said to have started life as a tower at Otsu Castle and was modified when it was moved to Hikone, so it carries a fascinating history of its own. Originally the castle stood right on the lakeshore, and land reclamation has since left it about a kilometer from the water. Even so, the view from the top still gives a sense of the surrounding town and the lake in the distance.

Hikone has a fun modern side too. Its mascot, Hikonyan, is a cat character inspired by a folktale about Ii Naotaka and a beckoning cat, and it is beloved by visitors. A pleasant area called Yume Kyobashi Castle Road, built in an old-fashioned style, offers a pleasant place to browse and take a break. The city is also known for butsudan, traditional household Buddhist altars, which are crafted locally.

Omihachiman and Merchant Heritage

A short distance along the lake, Omihachiman is a charming town that grew around Hachimanyama Castle. After the fall of Azuchi Castle, many merchants settled here, and they became known as the Omi merchants, who traveled widely and built successful businesses. Their former homes still stand in the old quarter, giving the streets a refined and historic atmosphere.

The Hachiman-bori canal runs through the old town and is preserved along with the merchant residences. Walking beside the water, you can admire the old merchant houses and the calm reflections on the water. A ropeway connects the town with the top of Hachimanyama, where you can enjoy views and visit a shrine. The town also contains Western-style buildings designed by William Merrell Vories, an American architect who arrived in 1905 as an English teacher and spent much of his career here.

The mix of canal scenery, merchant houses and early twentieth century architecture makes Omihachiman a rewarding stop for photographers and history lovers. Take your time wandering the quiet lanes, and keep an eye out for small cafes where you can sit with a cup of tea.

Planning Your Visit

Shiga is easy to reach from Kyoto and Osaka by train, and the main lakeside towns such as Otsu, Hikone, Nagahama and Omihachiman are all linked by rail. Many travelers visit Hikone as a day trip from Kyoto, while a two or three day itinerary lets you see the lake, the castle and the canals at an unhurried pace. Renting a bicycle is a popular way to enjoy the lakeside scenery in good weather.

Spring brings cherry blossoms around castles and shores, while autumn offers crisp air and colorful leaves. Summer can be warm, so bring water and sun protection, and winter has a quiet charm with fewer crowds. Wear comfortable shoes with good grip, since castle stairs are steep and polished wood can be slippery. At many Japanese castles you are asked to remove your shoes at the entrance, so slip-on footwear is handy.

Allow a generous half day for Hikone and its castle area, and a little extra time if you want to add Omihachiman. Check opening hours and ticket details ahead of time, and carry a small amount of cash for snacks and souvenirs.

Quick Takeaways

Lake Biwa and Hikone Castle show a gentler side of central Japan. The lake offers ancient natural history, poetic views and easy outdoor fun, while the castle gives a rare look at an original keep from the Edo period. Omihachiman adds canals, merchant houses and notable architecture.

Plan an easy trip from Kyoto, take your time at each stop and leave room to simply sit by the water. The scenic heartland of Shiga is a place that rewards slow, curious travel.