11.   It has an observation tower for visitors, but those who want a close-up look at the walls risk being beaned by a golf ball.

12.   It will include a large-format theater and an observation tower to watch planes come and go from the Dulles airport.

13.   One afternoon, we hiked a trail that begins at the summit and passes by the observation tower.

14.   Plans to open a snorkeling center, observation tower, restaurant and other amenities have been delayed.

15.   Riding the elevator to the top of every observation tower I saw.

16.   The blue observation tower of the UN post stands in the middle of the town.

17.   The boardwalk there rises to an observation tower that affords a horizon-to-horizon view of the Shark River Slough.

18.   The park features interpretive displays, a boardwalk, observation tower and boat tours.

19.   The range has been closed since a civilian Puerto Rican guard was killed after Marine jets dropped bombs that unintentionally hit an observation tower last spring.

20.   Washington is interested in trying it as a cost-saving measure, to cut down on the need for staffing observation towers.