1. On July 23, 1829, the cornerstone for the New Hampshire State House was laid in Concord. The building still stands and is considered one of the finest examples of Greek Revival architecture in the United States.

2. In 1873, the town of Milton was incorporated in New Hampshire on July 23. Milton is located in Strafford County and is home to the Milton Three Ponds, which offer recreational opportunities such as fishing, boating, and swimming.

3. On July 23, 1910, the first-ever air show in New Hampshire was held at Pine Island Park in Manchester. The event featured demonstrations of flying by aviators from across New England.

4. In 1941, the Mount Washington Cog Railway in New Hampshire celebrated its 83rd anniversary on July 23. The Cog Railway is still in operation and offers visitors the opportunity to ride to the summit of Mount Washington, the highest peak in the Northeast.

5. On July 23, 1997, the New Hampshire Fisher Cats played their first-ever game at their new stadium in Manchester. The Fisher Cats are the Double-A affiliate of the Toronto Blue Jays and have been a popular attraction in New Hampshire ever since.