As opposed to the omnipresent in Jordan remains of Roman and Umayyad structures, Qasr al-Abd is a rare example of architecture pre-dating the Roman era. Its exact origins remain unknown, which only adds to the fascination. Qasr al-Abd is usually described as a large Hellenistic palace from the first quarter of the second century BCE. Not too far from here are the ancient caves dating back to roughly the same time period.

One of Amman's most entertaining attractions is the Royal Automobile Museum, mostly containing (nearly a hundred!) vehicles from the collection of late King Hussein of Jordan. Models spanning the second half of the 20th century make for an interesting look around, the latest hit addition being the very vehicle used in the filming of acclaimed "The Martian".

The Duke’s Diwan is a time capsule of early 20th-century Amman, hidden in plain sight on the busy King Faisal Street. Built in 1924 as the city’s first post office, this Ottoman-era stone house later became the Haifa Hotel before heritage activist Mamdouh Bisharat ("The Duke of Mukheibeh") rescued it from demolition in 2001. Today, its creaking wooden floors lead through rooms frozen in Jordan’s past, complete with antique typewriters, sepia photos of camel caravans on dusty roads, and a balcony overlooking downtown’s metamorphosis. More than a museum, it’s a living diwan (gathering space): poets hold readings at the carved oak table, while artists riff under the Arabian archways. Admission is free, and the duke himself sometimes holds court, spinning tales of old Amman over cardamom coffee. Don’t miss the upstairs gallery, where rotating exhibits spotlight Jordan’s underground creatives.