Cleveland Hopkins International Airport has an observation deck at the end of Concourse B, which gives you a full view of the parallels (6/24). In the winter, or during bad weather, they close the outdoor portion of the deck and that does limit your view somewhat. It's still a good place.
Unfortunately the other two places I could mention will soon be gone due to the expansion project:
1. 100th Bomb Group Restaurant, 20000 Brookpark Road (that's the place that's 100' from the end of Rwy 24R) The owners built a 6 ft. high mound right inside the entrance and there's a mud/gravel parking lot there, too. The a/c "buzz" you if they're sidestepped to 24R for landing. Most of the a/c depart from Rwy 24R, which means you get the jet blast and, aah, the smell of JetA!
Unfortunately this location will be gone in a matter of weeks (no more than three months) because of the expansion project. Brookpark Road will be realigned, the 100th Bomb Group's current restaurant will be demolished. The property will become the overrun and ILS area for the new 9000' runway (6W/24W).
2. At the intersection of IX Center Road and Grayton Road (south of the airport.) This location will be available much longer since the Runway 6R/24L extension is Phase II, at least two years off. This place doesn't have as good of a view as the 100th Bomb Group -- you're much farther off to the east of the runways, and much farther back (probably 1/4 mile) from the end of 6R/24L. Since most a/c depart on 6L, they're even farther away. You're also at least 500' from the approach path to 6R. But it's an OK place.
3. For Runway 10, you can go to a spot right under the end of the runway, on West Hangar Road (there's an entrance to a side road just east of the NASA entrance on Brookpark Road. That's West Hangar) Kepp an eye out for security -- they don't like people parking there. Runway 10 is VFR only, and is only used when the main runway use is 6L/6R, mostly in the evening.
That's about it. For more information, check out my spotters' webage: