What is landmark festival 2017?

Unfortunately, as an AI language model, I don't have access to current events or the latest updates. However, I can provide you with some general information about the Landmark Festival.

Landmark Festival is a music and arts festival that usually takes place in Washington, D.C. The festival showcases a diverse lineup of musicians across various genres, along with various art installations, food vendors, and other attractions. The festival aims to raise awareness and funds to support the National Mall and its many historic monuments and landmarks.

In the past, Landmark Festival has featured popular artists such as Drake, The Strokes, Alt-J, and many more. The festival typically takes place in the fall, with tickets available for purchase in advance.