If you go:

What:

A ceremony to celebrate the completion of the Gateway Arch National Park renovation project and the reopening of the Museum of Westward Expansion at the Gateway Arch.

When:

10 a.m. Tuesday

Where:

The new West Entrance plaza in Luther Ely Smith Square. (In case of rain, the ceremony will be moved inside the visitor center.)

Details:

St. Louis Cardinals Hall of Famer Ozzie Smith will emcee the event, which will feature remarks from local, regional and national dignitaries. Afterward, the Normandy High School marching band will lead a procession to the North Gateway of the Arch grounds (near the Eads Bridge), where a family-friendly festival will feature live music and food trucks.