Simplify the following text for a Grade 11 native English-speaking person.
Original: Among his most important works are a series of paintings of the River Thames , mostly around Hampton , executed in 1874 , and various landscapes depicting places in or near Moret-sur-Loing .
Simplified: Among his most important works are a series of paintings of the River Thames , mostly around Hampton Court , painted in 1874 , and various paintings showing places in or near Moret-sur-Loing .