館山市下町交差点から南房総市和田町までの約46kmの海岸線の道路が房総フラワーラインと呼ばれます。
伊戸から相浜までの約6Kmは「日本の道百選」に認定されており、１月から春にかけては菜の花、夏にはマリーゴールドと、季節の花々が道沿いを彩ります。
房総フラワーライン周辺には、洲埼灯台、アロハガーデン館山、ゴルフ場や館山野鳥の森、安房神社などの観光ポイントが数多くあります。
空気の澄んだ日には富士山や大島・利島などの伊豆諸島を見ながらのドライブが楽しめます。

The coastal road stretching approximately 46 km from Simocho Intersection in Tateyama City to Wada Town in Minamiboso is known as the Boso Flower Line.
Ito to Aihama, approximately 6 km long, has been designated as one of “Japan’s Top 100 Roads,” and from January to spring, it is adorned with seasonal flowers such as rapeseed, and in summer, marigolds, along the roadside.
Around the Boso Flower Line, there are numerous tourist attractions such as Sunosaki Lighthouse, Aloha Garden Tateyama, golf courses, Tateyama Wild Bird Forest, Awa Shrine, and more.
On clear days, you can enjoy a drive while admiring views of Mount Fuji and the Izu Islands, including Oshima and Toshima.