Incredible sites from around the world that have emerged from underwater. From Spain to Greece, these submerged villages and monuments reveal centuries of hidden history.

When in Pittsburgh, make sure to get out of downtown and explore this friendly suburb on the Allegheny River with unique architecture and a beautiful park.

In much of the U.S., they're known as "traffic circles." In the United Kingdom, they're called "roundabouts." Throughout Massachusetts and in most places in the five other New England states, ...

For Mr. Santos, math can also inspire ideas about structures that have already been built — a new way to see and appreciate the world. Inspired by this idea, The New York Times created a virtual tour ...

These tributes to fallen soldiers may not be as instantly recognizable as the Vietnam Memorial and others, but their stories are no less fascinating-including one that doubles as a mausoleum right in ...

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