Spatial query to find 5 closest landmarks to a lat/long in Chicago

gistfile1.sql

-- distance units in planar degrees. 4326 is WGS 84 and the long lat units are degrees
SELECT
ST_Distance(ST_GeomFromText('POINT(-87.6348345 41.8786207)', 4326), landmarks.the_geom) AS planar_degrees,
name,
architect
FROM landmarks
ORDER BY planar_degrees ASC
LIMIT 5;