Complex sentence: Leo (Adam Levine) and Teresa (Jenna Dewan-Tatum) are two horror-junkies visiting reputedly haunted sites on their honeymoon, currently exploring the Briarcliff Manor Sanitarium, an abandoned mental institution and once a tuberculosis hospital where many thousands died.
Split into simpler sentences: Leo (Adam Levine) and Teresa (Jenna Dewan-Tatum) are two horror junkies visiting reputedly haunted sites on their honeymoon. They explore the Briarcliff Manor Sanitarium, an abandoned mental institution and once a tuberculosis hospital where many thousands died.