While on my most recent trip to Las Vegas, I was kind of bothered by all the empty lots. Many of the old time hotels have been demolished with nothing to replace them. Or, at least, nothing finished to replace them. The strip suffers from empty lot syndrome greatly. It's a little difficult to tease out the "unbuilt" Las Vegas from all the touristy sites, but if you're feeling ambitious and it's not too hot, you can walk the north end of the strip and see at least two unfinished resorts.
If you haven't been to Las Vegas, imagine that each hotel property is the size of a mall. It can take hours to walk the strip and it's very easy to underestimate just how long it will take since everything looks close together.
We did a little shopping as Canadians love to do ("OMG Target!! Kohl's!! JCP!!") and while on the way back to the timeshare we stayed at with our friends (itself surrounded by empty lots), I noticed these giant pillars that reminded me a bit of the poem "Ozymandias"
The two giant legs, in this case, belong to the Skyvue Las Vegas Super Wheel
which was supposed to open in 2012. Signs around the lot advertised that the land was for sale. It joins the "Voyager" as an unbuilt ferris wheel - and in case you're wondering one ferris wheel did manage to get built, the "High Roller".( Pic under cut )