It’s no surprise that one of the most useful and appealing iPad travel apps to come along would be from DK Publishing. The company’s Eyewitness Travel Guides long ago set the standard for visually oriented guidebooks, so it’s the perfect match for the iPad’s high-resolution display and intuitive design.

The first app in a series, Eyewitness Travel: Paris, isn’t cheap — $16.99 — but it promises to be the only guide you need the next time you visit the City of Light. It can take you on one of 14 beautifully illustrated walks, inside 17 iconic landmarks, along a historical timeline and through galleries of more than 400 photos.

Everything comes together in the Area by Area section. Call up the Latin Quarter, say, and toggle between listings of hotels and restaurants; explore the Pantheon or the Musee National du Moyen Age; or explore a map studded with 11 places of interest, then click to see nearby lodging, eating and shopping options. Better yet, at the touch of a button, you can locate yourself on the GPS-enabled map and start finding your way around in real space.

Naturally, that function doesn’t work when your real-world location is Washington. Or does it? The app doesn’t let you book a flight, but there are plenty of other ways to do that.

Joe Yonan