No need to buy tickets in advance. They take credit cards and yen. Allow a few hours to walk around the park. There is a gift shop and museum. Also a few places to get a snack or drinks if you need. Taxis are available at the gate to take you back to hotel.

Hi, The entrance fee is 500JPY/person. If you're going to visit Sankeien from Osanbashi International Passenger terminal (search official website osanbashicom), the nearest railway station is JR line's Kannai (15min walk) or Minatomirai line's Nihon O-dori (7min walk). There is four ways to get to Sankeien. 1. Bus from Sakuragicho station: Take JR Keihin-Tohoku line at Kannai station to Sakuragicho station (one stop), then take Yokohama city bus No.8 or No.148 in front of the station (bus stop No.2), get off at Honmoku-Sankeien-Mae bus stop then walk ca. 5min to the entrance of Sankeien. The bus trip takes ca. 25min. 2. Bus from Yokohama station: Take JR Keihin-Tohoku line at Kannai station to Yokohama station (two stops), take Yokohama city bus No.8 or No.148 at East exit (near Sogo department store) (bus stop No.2), get off at Honmoku-Sankeien-Mae bus stop then walk ca. 5min to the entrance. The bus trip takes ca. 35min. 3. Bus from Minatomirai line Motomachi Chukagai station: Take Minatomirai line at Nihon Odori station to Motomachi Chukagai station. (one stop), go to exit No.4 at Motomachi Chukagai station then take Yokohama city bus No.8 or No.148 from Yamashitacho bus stop. get off the bus at Honmoku-Sankeien-Mae bus stop then walk ca. 5min to the entrance of Sankeien. The bus trip takes ca. 15min. These three ways use the same bus lines. No.148 bus is express, so it's 5min faster than No.8 bus. 4. Bus from Negishi station: Take JR Keihin-Tohoku line at Kannai station to Negishi station (three stops), take Yokohama city bus No.58 or No.99 or No.101 in front of the station (bus stop No.1), get off at Honmoku bus stop then walk ca. 10min to the entrance. The bus trip takes ca. 10min. Bus fares: The single ticket costs 220JPY at Yokohama city bus (if you have a Japanese rechargeable contactless smart card like "Suica" "Pasmo" (similar to Sydney's Opal card), the single ticket costs 216JPY). Minatomirai line fares: Single ticket from Nihon O-dori to Motomachi Chukagai costs 180JPY. (with Japanese rechargeable contactless smart card it costs the same, 180JPY). JR line fares: Kannai-Sakuragicho 210JPY (with Japanese rechargeable contactless smart card it costs 206JPY). Kannai-Yokohama 210JPY (with Japanese rechargeable contactless smart card it costs 206JPY) Kannai-Negishi 160JPY (with Japanese rechargeable contactless smart card it costs 154JPY) I've visited Sankeien twice and took a bus from Yokohama station, so I know well about No.148 or No.8 bus. If you have any questions, feel free to ask me. Hope you'll enjoy staying in Japan and welcome!