Here is an online map to find informal settlements or slums with limited access to streets across Africa, Middle East, South-East Asia, and more.

This article covers a free global sprawl map where you can check the street connectivity by exploring cul-de-sacs, loops, grids, deadends, etc.

Take a virtual tour of more than 500 museum galleries by Google Arts and Culture. Discover a popular collection of museums sitting at your home.

This article covers a free library of OpenStreetMap tiles that can be used to display OpenStreetMap data with unique layouts.

This article covers a free web app where you can create collaborative maps online and share in read-only mode with password protection.

This article covers an interactive map to track the spread of novel coronavirus in real-time with the number of confirmed cases by countries.

Free website to find public piano near you on this worldwide Piano map. Pianos for Travelers is a platform that lets you discover locations of public pianos

This article covers a free overlap map tool where you can create a visual comparison of countries, rivers, states, lakes, man-made features, etc.

Library of Congress has a collection of over 30,000 historical maps which can be used by teachers for teaching and by students for research projects.

This article covers free interactive historical topographic maps that you can use to observe the topographical changes happened since 1880.