Kinseidai, Observation deck in Suwayama Park, Kobe, Japan

Kinseidai is the observation plaza on the hillside of Suwayama in Chūō-ku, Kobe, part of Suwayama Park together with the Suwayama Observatory, the Venus Bridge and Suwayama Children's Park. From the plaza, visitors look over Kobe Port. In the centre-rear of the plaza stand a monument commemorating the 1874 transit of Venus and the Kaigun-ei no Hi, a stone monument for the Kobe Naval School founded by Katsu Kaishū; a radio tower also survives on the site.

The viewing plaza on the slope of Suwayama became known as Kinseidai after a French astronomical team observed the 1874 transit of Venus from this spot. The team, led by Delacroix with Shimizu Makoto, recorded the event under clear Kobe skies. A monument to the Venus observation and a stone marking Katsu Kaishū's Kobe naval school stand at the rear of the plaza.

The name Kinseidai comes from the French transit-of-Venus expedition that observed the event here in 1874. A monument to that observation stands at the back of the plaza, beside a stone monument to the Kobe Naval School founded by Katsu Kaishū. A radio tower also survives on the site.

The location is accessible on foot from Suwayama Park and sits at an elevated level requiring some uphill walking. Comfortable footwear is advisable, especially if approaching from lower sections of the park.

Nearby stands Venus Bridge, a loop structure connected to the observation deck that has become a romantic destination. Couples often leave locks here as symbols of their affection.