Walk right through it.
Midori — CC BY 3.0 · Ya, saya inBaliTimur — CC BY-SA 2.0 · Sasha India — CC BY 2.0
A real Soviet-built naval submarine that served in the Indonesian navy from the 1960s to the 1990s as the Pasopati, then was moved whole into the city centre on the bank of the Kalimas River and turned into a museum that visitors walk through. Surabaya is the base of Indonesia's eastern fleet, so the monument stands for its naval history. You enter through a hatch in its side and walk a narrow passage through all its compartments: torpedo rooms, stacked sailors' bunks, the control room with its periscope and gauges, and the engines. Visitors marvel at the cramped space where dozens of sailors lived for months. Outside are a small garden and a hall screening a short film on its history. Tickets are a token IDR 15,000 or so. The passages are narrow and the steps high, so it may not suit anyone uneasy in confined spaces. It is great fun for children, an hour is enough, and it sits near the big central shopping mall and Cheng Hoo Mosque. Evenings are pleasant on the riverbank.
Walk right through it.
Periscope and gauges.
An evening stroll.
Jalan Pemuda, central Surabaya, by the Kalimas River
Usually yes, they love the passages and hatches, but the steps between compartments are high, so help them and watch their heads.