How to say observation window in different languages

You can say observation window as fenêtre d'observation, hublot d'observation, regard in the following countries: Benin; Burkina Faso; Burundi; Central African Republic; Chad; Democratic Republic of the Congo; Djibouti; France; French Guiana; French Polynesia; French Southern Territories; Gabon; Guadeloupe; Guinea; Ivory Coast; Madagascar; Mali; Martinique; Mayotte; Monaco; Niger; Republic of the Congo; Reunion; Saint Barthelemy; Saint Martin; Saint Pierre and Miquelon; Senegal; Togo;

You can say observation window as ventanilla de inspección, ventana de observación in the following countries: Argentina; Bolivia; Chile; Colombia; Costa Rica; Cuba; Dominican Republic; Ecuador; El Salvador; Equatorial Guinea; Guatemala; Honduras; Mexico; Nicaragua; Panama; Paraguay; Peru; Spain; Uruguay; Venezuela;

You can say observation window as kijkvenster in the following countries: Aruba; Belgium; Curacao; Netherlands; Netherlands Antilles; Sint Maarten; Suriname;

You can say observation window as schaufenster, schauglas, beobachtungsfenster in the following countries: Austria; Germany; Liechtenstein; Switzerland;

You can say observation window as tarkastuslasi in the following countries: Finland; Northern Mariana Islands;

You can say observation window as oblò, portello di ispezione in the following countries: Italy; San Marino;

You can say observation window as observationsfönster in the following countries: Aland Islands; Sweden;

You can say observation window as vaateaken in the following countries: Estonia;

You can say observation window as смотровое окно in the following countries: Russia;

You can say observation window as оглядове вікно in the following countries: Ukraine;