It’s Thursday, so here are some ideas on a few fun things to do this weekend. Check our picks for the activities to hit and places to explore. Here's what's happening in and around Concord.

Celebrate First Parish's 375th Anniversary

When/Where: All throughout the month of October at various locations around Concord.
Why Go: Tomorrow night, Ronald Bosco will discuss “The First Parish and Concord’s ‘Errand into the Wilderness’—and Beyond," at the library; Tomorrow folks can learn about the relationship between the Parish and the town with guided tours of historic sites; and travel back in time for a conversation with Henry David Thoreau. Check out the First Parish website for details on all the events this month.
Pricing: Friday's event is free, but see the Parish website for pricing information on the various events.

Concord Orchestra: "Centennials"

When/Where: Friday, Oct. 14, 51 Walden Street
Why Go: See and hear the Concord Orchestra's season opening fall concert, conducted by Richard Pittman.
Pricing: $25

Discover the New West Concord

When/Where: Saturday, Oct. 15, 10 a.m. to 4 p.m., along Beharrell Street and Commonwealth Avenue in West Concord.
Why Go: Rediscover all that West Concord HAs to offer. Visit the shops, enjoy the food, take in some entertainment, even participate in a scavenger hunt.
Pricing: Free

Corinthian Lodge Open House

When/Where: Saturday, Oct. 15, 9 a.m. to 3 p.m., at the Concord Masonic Lodge, Monument Square.
Why Go: Get a glimpse into the world of the Free Masons. Ever have any questions about the historic fraternal organization? Get them answered at this open house.
Pricing: Free

Ultrasonic Rock Orchestra Rock N’ Roll Circus

When/Where: Saturday, Oct. 15, 8 p.m., at the Regent Theatre in Arlington
Why Go: See this giant, 10-member rock band perform classic rock staples. This weekend, hear an all Beatles set with the songs of Abbey Road.
Pricing: $20, dinner and show deals are also available.