The Capital Wheel in National Harbor is an awesome activity for anyone new to the DC area or longtime residents looking to check out the city from a new perspective. Just make sure no one you're taking is afraid of heights!
This giant ferris wheel is located right along the National Harbor, and it offers incredible views of the entire DC skyline. The view of the Washington Monument, the National Harbor, and even the White House are second to none, and if you go at night, the entire city is illuminatedf for an even more spectacular experience.
General admission is only $15, so it's definitely on the affordable side. If you're looking to really impress, you can book a VIP experience for $50. This gets you a fancy gondola with leather seats and a glass floor, front of the line privileges and a photo package. The gondola accommodates up to four people, and they're even climate controlled!