Trolleys depart every 20 or 30 minutes (depending on the season).

Boats depart every 15 to 30 minutes from various stops:

Trains would depart every 30 minutes during the day and 15 minutes during peak hours.

Double-decker bus that departs every 20 minutes from Place de la Constitution.

Services departs twice an hour and every 15 minutes during peak.

Korean Air buses depart every 20 minutes on each of four routes to major Seoul hotels.

During the day this bus departs every 15 minutes in every direction.

Tours depart every 15 to 20 minutes, subject to traffic conditions.

Ferries (Y1.50) to the academy depart every 40 minutes past the hour from between 6.40am and 8.40pm.

These depart every 20 minutes between noon and 6 P.M. all three days.