You might want to get your camera out and head to Ram Khom Kaeng King Monument— just one of the landmarks located 4.4 mi (7.1 km) from central Sukhothai.
Wat Chedi Sung is just one of the landmarks located 1.9 mi (3.1 km) from central Mueang Kao, so you might want to stop by for a few pics during your trip.
If museums are on your list of things to see in Mueang Kao, then you might want to head to Ramkhamhaeng National Museum. If you want to see more of the museums in Mueang Kao, Sangkalok Museum isn't far either.