The Old City continues to be Quito's main attaction: it boasts no fewer than 40 churches, 17 plazas and 16 convents and monasteries (many of these with guided tours). It's been called the 'Reliquary of the Americas' for the richness of its colonial- and independence-era architecture and heritage. It's a great district to wander, with several excellent museums, theatres, and plenty of restaurants and terrace cafes for a rest while sightseeing.