the chichen itza riuns are possibly the most beautiful things I've ever seen. these buldings belonged to the maya, and were found (i believe) in the 1950s after centuries of being hidden by the Yucatan jungle. very recommended because it is beautiful, and it is one of the 7 modern wonders of the world

the eiffel tower offers great views from the top floor and lower ones. as it is known it also offers a restaurant and several shops on the lowest floor.

six flags magic mountain is the second largest park in terms of roller coasters, and it is very fyn and adrenaline-rushing. even with its size, it can get very crowded on weekends.

very beutiful and quite a view from this observatory. interesting exhibits too. in the night hours, though, there can be a little too much crowd.