Complex sentence: In the 1950s interest in the history of the site revived, and a replica of the fort was constructed, which now serves as a living museum and a popular tourist attraction in the village of Lake George.
Split into simpler sentences: In the 1950s interest in the history of the site revived, and a replica of the fort was constructed. It is now operated as a living museum and a popular tourist attraction in the village of Lake George.