Climbing up the Dunne's River Falls in Jamaica, just north of Ocho Rios. I've never enjoyed a hike more because we were in water moving up the river bed & every 10 or 12 feet you come to another small falls, prettier than the one before it...hence the 8 Rivers....we approached it from the sea and it looked like the Graden of Eden with all the wild orchids and blues of the falls flowing into the sanbar below...luscious. Way prettier than any picture can capture.
Agreed that the Eiffel Tower is utterly amazing (for a man made wonder) - the views from the very top show towns, parks, The snaking Seine and those gothic churches so tiny below and you can see for miles & miles - 35 or more away in to the horizon line. If you're there, you Must go to the Top! Photos never do this experience justice, either.
Ah..."The Louvre" is so much larger & intense than most can imagine....and yes, it's the most confusing museum in the World to travel around in side.