The awesomely grotesque chimeras (including the famous le Stryge) high above Paris were a few of the rewards for climbing the more than 400 twisty, corkscrew steps all the way up to the belfry of Notre-Dame de Paris cathedral.
There are safety nets everywhere you look, but there also are little holes in these nets–just the right size for your hand and an iPhone.

Tip: You’ll need to get a free ticket with a specific time for entry, and you’ll do that near the north tower, around the corner from the main entrance. There’s a kiosk onsite for this, or you can use your smartphone while you sip wine at a nearby cafe.