Martel is a medieval town, with the older houses built of pale stone that contrasts with their reddish-brown roofs. The ramparts that used to surround the town are gone but in their place is a wide boulevard and the narrow-streeted central part is a pedestrian area. The town has a distinctive sky-line with medieval towers projecting above the houses, and because of these, the town is sometimes called "La ville aux sept tours".
There is an eighteenth-century market hall taking up most of the central cobbled square. Markets are held here on Wednesdays and Saturdays, and during late December or January there is a truffle market.
There is a preserved railway, known as the "Truffadou" because it once carried the truffles to the market in Martel.