The Space Shuttle Discovery was mounted on a 747 in Florida over the weekend. Photo by NASA.

Don’t forget to look out towards the Potomac River tomorrow morning between 10 and 11 a.m.—you may just catch a glimpse of Space Shuttle Discovery as it is flown over Washington on the back of a 747 on its way to the Udvar-Hazy Center of the National Air and Space Museum tomorrow.

The 747 will be making a number of low-altitude passes over the city—it’ll be at 1,500 feet—making for a one-time viewing event for most D.C. residents. Some of the best views will be from along the Potomac River, but if you get a chance to gain some altitude and stand atop a building downtown, take the time to do so.

What does it take to fly a shuttle on the back of a 747? NASA interviewed the two pilots about the experience—the video is below—and beyond taking off, they say that the experience is relatively similar to flying a normal passenger jet. The Post also has a very cool feature on the whole process.

The shuttle will be officially welcomed at Udvar-Hazy on Thursday.

UPDATE, 12:30 p.m.: Courtesy of the commenters, below is a map NASA put together of the best places to catch a glimpse of the shuttle.

View Sites for Viewing Space Shuttle Discovery in a larger map