Metropolitan Intercity Railway Co. operates Tsukuba Express(TX)line which connects Akihabara in central Tokyo and Tsukuba in 45 minutes. The fare is 1,150 yen. Get off at Tsukuba station (last stop) and get out to the Tsukuba Center Bus Terminal through Exit #4.
To Sengen site 15 minute-walk to NIMS or take an Arakawaoki-bound local bus at the bus stop #4.
Get off at "Sengen ichome".

Take Route 6 and enter to "Higashi o-dori" line; continue on this street for a while. At the intersection of "Minami o-dori higashi", turn left onto "Minami o-dori" street.

Japan Railway Co.(JR) and Kanto Railway Co. operate shuttle bus services between Tokyo and Tsukuba. The busses leave from Tokyo station "YAESU-south exit" (bus stop #3) every 10 to 20 minutes. It takes about 90 minutes to Tsukuba depending on the traffic. Tickets are available at a ticket booth in Highway bus center, which is located in YAESU-south exit. Take a bus, then get off at “Sengen ichome”.

The best way to get to Tsukuba from Haneda Airport is to take a shuttle bus service. There are 24 bus services/day coming and going to the airport. The buses leave from the bus stop #13 on the 1F (arrival level). It takes approximately 110 minutes to Tsukuba center (depends on traffic). Take a bus, then get off at “Sengen ichome”.

The easiest way to get to Tsukuba is to take the Airport Liner NATT'S, a shuttle bus service. It departs from bus stop #8 at terminal 1 and bus stop #10 at terminal 2. Tickets are available at Keisei counter, which is located on the 1st floor of each terminal. It takes approximately 100 minutes to Tsukuba center (depends on traffic). Take a bus, then get off at “Tsukuba Center”, then 15 minutewalk or take an Arakawaoki-bound local bus at the bus stop #4. Get off at “Sengen ichome”. Sengen site is located across the bus stop, so go back to the large intersection close to the bus stop and take left and cross the street. Go straight for about 500m, you will see the main gate of Sengen site on your left. (5 minute walk)