mystery spot

The Mystery Spot is a tourist attraction located near Santa Cruz, California. It was opened in 1939. The operators of the small site (which is about 150 feet in diameter) claim that it is a place where the laws of physics and gravity do not apply and provide a number of demonstrations in support of these claims.
this is the spot where u cant stand straight to balance ur body, u have to lean to certain angle to balance.
The Mystery Spot is a tilt-induced visual illusion. The illusion experienced by visitors results from the oddly tilted environment as well as standing on a tilted floor. Inside the tilted room of the Mystery Spot misperceptions of the height and orientation of objects occur. Even when people are standing outside on a level ground, the slant of the building in the background causes misperceptions as we judge the height of people using the slant of the roof rather than the true horizon

Phenomena demonstrated by the tour guides (and by visitors using levels) include two people standing on opposite sides of a level surface who appear to change height as they switch positions and a ball that appears to roll up a plank. At the site, an old shed appears to have lost part of its foundation and is slanted and oddly angled. Additional claims of mystery are the growth patterns of trees and their branches within the Mystery Spot, the lack of animals such as dogs, rodents or even birds inside the compound (visitors are not allowed to bring their dogs on the tour) and the distortion of magnetically calibrated measurement devices such as compasses or even GPS devices.