Malessu' Pillbox

{{Use mdy dates|date=February 2025}}

{{Infobox NRHP

| name = Malessu' Pillbox

| nrhp_type =

| image =

| caption =

| location = Talona Beach on Cocos Lagoon, Malesso', Guam

| coordinates = {{coord|13|15|34|N|144|40|20|E|display=inline,title}}

| locmapin = Guam

| builder = 10th Independent Mixed Regiment

| added = March 4, 1991

| area = less than one acre

| mpsub = {{NRHP url|id=64000141|title=Japanese Coastal Defense Fortifications on Guam TR}}

| refnum = 88001872{{NRISref|version=2010a}}

}}

The Malessu' Pillbox is a World War II-era Japanese-built defensive fortification on the shore of Malesso', Guam. Located about {{convert|15|m|ft}} from the high-tide line at Merizo Beach, it is a rectangular structure built of steel-reinforced concrete and basalt rock. It is {{convert|3.9|m|ft}} deep, {{convert|2.4|m|ft}} wide, and about {{convert|2.42|m|ft}} high, although only about {{convert|0.75|m|ft}} of the structure is visible above ground. Its gun port has a view of the Merizo pier, and is approximately at ground level. It was built by Japanese defenders during their occupation of the island 1941–44.{{cite web|url={{NRHP url|id=88001872}}|title=NRHP nomination for Malessu' Pillbox|publisher=National Park Service|accessdate=2015-05-27}}

The structure was listed on the National Register of Historic Places in 1991.