In its present 1970s form, Khayyam's mausoleum is like a giant calligraphic vase with diamond-shaped lozenges cut out to leave an airy net of criss-crossed marble. Tickets include entrance to a tiny Khayyam museum but the foreigner fee still seems steep and the monument is easily visible for free from the nearby Imamzadeh-ye Mahrugh.
The complex is at the southeastern terminus of bus 10 (IR5000), or 15 minutes' drive (5km) from central Khayyam Sq.