For a romantic afternoon in the summer it's hard to beat the lake steamers on Lake Brienz. The boat docks right behind the Ost train station. The boats make leisurely journeys up and down the lake crisscrossing from one lakeside village dock to another.  The sites are fantastic of waterfalls, villages, and the many places of interest in the area. The upper deck is a great place to enjoy a glass of wine and a snack as the scenry goes by. If you want to get on and off the boat to explore any of the lakeside sites just keep your ticket with you and you can reboard the next boat that comes by.