Wallaceville is a suburb of Upper Hutt

Upper Hutt

Upper Hutt is a satellite city of Wellington. It is New Zealand's smallest city by population, the second largest by land area. It is in Greater Wellington.-Geography:Upper Hutt is 30 km north-east of Wellington...

 located in the lower North Island

North Island

The North Island is one of the two main islands of New Zealand, separated from the much less populous South Island by Cook Strait. The island is in area, making it the world's 14th-largest island...

 of New Zealand

New Zealand

New Zealand is an island country in the south-western Pacific Ocean comprising two main landmasses and numerous smaller islands. The country is situated some east of Australia across the Tasman Sea, and roughly south of the Pacific island nations of New Caledonia, Fiji, and Tonga...

. It is named after John Howard Wallace (1816-91), an early New Zealand settler, local body politician, businessman and author of one of the first published histories of New Zealand. It is home to the oldest surviving wooden blockhouse

Blockhouse

In military science, a blockhouse is a small, isolated fort in the form of a single building. It serves as a defensive strong point against any enemy that does not possess siege equipment or, in modern times, artillery...

 in New Zealand. AgResearch has its National Centre for Biosecurity and Infectious Diseases at Wallaceville.