Ground Truth
Terrain notes for wooded land. Public data, drone lidar, and a map you can use before you buy or build.
Aug 2026Open →
Maps
13 maps.
38 browser tools
Free, no accounts
No installs, no tracking
Featured
13 items
National Park Explorer
Every National Park Service unit on one map. Click a park for when it was created, how big it is, and how many people visited last year.
Aug 2026Open →
State Extremes
The northernmost, southernmost, easternmost, and westernmost points of every US state and every country.
Aug 2026Open →
The Century of Africa
Africa's population will roughly triple this century. This story map asks whether power, water, and roads will keep up.
Aug 2026Open →
Torn Down / Built Back
Which Detroit blocks were torn down and which were built back, from 1870 to now.
Aug 2026Open →
World XI
A globe of more than 5,000 soccer clubs, each sitting on its home stadium.
Aug 2026Open →
Boston in Motion
Trains, buses, ferries, planes, harbor boats, and bikes, all moving on one Boston map right now.
Jul 2026Open →
Sequential Interstate Challenge
A driving order for every two-digit Interstate that cuts most of the extra connecting miles.
Jul 2026Open →
Train Route Atlas
Twelve famous train routes on a spinning globe, with a short note on each.
Jul 2026Open →
True Scale
See how big a place really is when you move it to another latitude.
Jul 2026Open →
U.S. Fantasy Transit Network
A made-up US transit map that connects cities at four scales, from coast-to-coast down to commuter.
Jul 2026Open →
Where the Games Go
Where North Shore Nostalgia eBay packages have gone, drawn as routes from Salem.
Jul 2026Open →
Predicting Tomorrow's Housing Crisis
A work-in-progress map of Massachusetts housing pressure, with sliders you can move.
in-progressOpen →
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