import folium
min_lon, max_lon = -45, -35
min_lat, max_lat = -25, -15
m = folium.Map(
max_bounds=True,
location=[-20, -40],
zoom_start=6,
min_lat=min_lat,
max_lat=max_lat,
min_lon=min_lon,
max_lon=max_lon,
)
folium.CircleMarker([max_lat, min_lon], tooltip="Upper Left Corner").add_to(m)
folium.CircleMarker([min_lat, min_lon], tooltip="Lower Left Corner").add_to(m)
folium.CircleMarker([min_lat, max_lon], tooltip="Lower Right Corner").add_to(m)
folium.CircleMarker([max_lat, max_lon], tooltip="Upper Right Corner").add_to(m)
m