Forest Park is a huge public park right in the middle of St. Louis. This is actually where Chase and Emily had their first kiss, and where they got engaged one year later! Definitely check out Art Hill with its fountains, and the St. Louis Art Museum at the top of the hill (it's also free!).
The City Foundry is a collection of cute boutiques, a food hall with tons of different options, and several fun evening activities (like Puttshack the mini golf bar, The Alamo Draft House and movie theatre, and Sandbox VR experience). This is one of Chase and Emily's favorite STL hangout spots.
Delmar Loop is another of Chase and Emily's favorite places in St. Louis. This college town strip is full of great restaurants, bars, and other activities. We recommend Corner 17 as a great food (and bubble tea) option - just be sure to get on the waitlist if its a weekend evening!