You are looking for small chocolate tin case geocache with magnetic. Bring your own pen.
The Paris Park in Seoul is also called the Parc de Paris.
The park was completed in 1987 and was built to symbolise the friendship between Korea and France on their 100 year anniversary of diplomatic ties.
The park is very beautiful and located in the heart of a residential area. The main feature of the park is a huge pond and water fountain. During the summer time the local children can play and swim in the huge pond. Besides the water fountain, there is plenty to do and see at Paris Park. As like most other parks in Korea you can find benches to relax on, nice walking trails and outdoor exercise equipment.
A nice feature to Paris Park is the barefoot path. You should walk down this path in your bare feet. The path has different patterns of stones on the ground and each section is supposed to work on a different part of your foot.
Another interesting feature is the mini Eiffel Tower and Arc De Triomphe at Paris Park.
You can get here.
By Bus : 163, 571, 603, 6627, 6637, 700, 6018
By Subway : Line 5 Omokgyo Station, Exit 2. Walk straight for about three blocks until you come upon the park.
** This cache is revival of Paris Park(GC1PQW0).