Just outside of Quito is where the measurements were first made that proved that the shape of the Earth is in fact an oblate spheroid. Commemorating this is a large monument that straddles the equator called Mitad del Mundo or middle of the world. The entrance for the park is $3.50 (included entrance to small museums - April 2016). Visit here if you're interested in learning some alternative facts and seeing some kitsch. Because it's not on the equator itself, and it's not a serious cultural or educational experience. No, the water doesn't really go down the plughole the opposite way in the hemispheres, and if you want to take it seriously you won't enjoy your time here. For some of the attractions like the planetarium, the price is $7.50. You can also go to the Intiñan Solar Museum which is right next to the monument, on the other side of the north fence. The museum is actually on the equator. For $4 you can have a tour of this little museum.