The highest point in the city will be open for business this weekend.

Crowds have begun checking out the views from The World Trade Center's observatory today and the experience isn't limited to the tower's 102nd, 101st and 100th floors. The lobby to the site includes video testimonials from the construction crews who spent the last 13 years working on the building.

Those men and women got to see their finished work on a special preview tour Wednesday.

After a 47-second elevator ride, which has an animated time-lapse video showing the history of the city, visitors are able to take in the views from three floors. A dining section on the 101st floor includes both fine dining and a more casual options.

Tickets cost $26 for kids ages 6-12 to $32 for adults. Relatives of 9/11 victims and survivors will be admitted for free. The management company for the observatory predicted that 4 million people will head to the tower's attraction in its first year.