At 1,815 ft/553 m, the CN Tower is considered among the world's tallest buildings and for more than 30 years has been a huge draw for high-altitude seekers and stunning panoramas. Attractions include an arcade, a flight simulator and a film that documents the tower's construction. The facility also has a revolving restaurant, cafe and shops. The glass-faced elevator takes less than a minute to reach the glass-floored observation deck. (Some people find the elevator ride and the see-through floor unnerving.) You can take the Sky Pod up another 33 floors above the observation deck. If you're planning to dine at 360 Restaurant or Horizons Cafe, call ahead for a reservation: You'll go to the front of the line and your ride to the top will be free. Tower and Observation Levels open Sunday-Thursday 9 am-10 pm, Friday and Saturday 9 am-10:30 pm. Hours for individual attractions vary by season. Ticket to observation deck only: Can$21.99 adults, Can $19.99 seniors, Can$14.99 children ages 4-12. Other attractions are priced separately. 301 Front St. W. (take the Yonge-University subway line to Union Station, go to the concourse level and follow the signs), Toronto. Phone 416-868-6937. http://www.cntower.ca.