import cartopy.crs as ccrs
from cartopy.io.img_tiles import OSM
import matplotlib.pyplot as plt


osm_tiles = OSM()

plt.figure(figsize=(16, 16))

# Use the tile's projection for the underlying map.
ax = plt.axes(projection=osm_tiles.crs)

# Specify a region of interest, in this case, Cardiff.
ax.set_extent([-3.3849, -3.0424, 51.4260, 51.5842],
              ccrs.PlateCarree())

# Add the tiles at zoom level 12.
ax.add_image(osm_tiles, 12)

ax.coastlines('10m')

plt.show()