Constructed by the French in 1896, the prison was taken over by the Vietnamese in 1954 to house prisoners of war. The original guillotine room and stories told by the ex-inmates themselves make this a gruesome but compelling experience.

The Warren County History Center has fun activities for all ages. Their mission is to promote, and preserve a continuing interest in the history and heritage of Warren County and the state of Ohio. The museum has new exhibits and events year round.

A must-see while in Porto is the São Bento Railway Station. More than just a train station, this place is another architectural jewel, among the many others this city boasts. Built by the Portuguese architect José Marques da Silva in 1900, the São Bento Railway Station opened to the public sixteen years later. Its construction took place on the site that once housed a Benedictine monastery, hence the name São Bento. The architecture has a French Renaissance influence, and even though its facade is already quite impressive, its interior is what leaves visitors truly awestruck. The main hall is beautifully decorated–from the ground to the ceiling — with more than 20,000 "azulejos" (Portuguese tiles), which recount important events of the history of Portugal.