Three kilometers (1.9 miles) east of Chichén Itzá , the centerpiece of the Parque Ecoarqueológico Ik Kil (Carretera Mérida-Cancún Km. 122, tel. 985/858-1525, 8 a.m.–6 p.m. daily, US$5.50 adults, US$2.75 children) is the immense, perfectly round Cenote Sagrado Azul with a partial stone roof.
Although real, the alterations to the cenote’s natural state—supported walls, a set of stairs leading you in, a waterfall—make it feel pretty artificial. While not representative of the typical cenote experience, this is a good option if you are traveling with small children and need a spot to cool off.
The cenote and on-site restaurant get packed with tour groups 12:30–2:30 p.m.; try visiting outside those times for a mellower visit. Better yet, stay at one of the on-site bungalows.