gistfile1.rb

require 'savon' 
client = Savon::Client.new "http://aws.hvm.dk/GetAddressService/GetAddressService.asmx?wsdl"

# Show the methods available
client.wsdl.soap_actions  
# [:get_post_code_list, :get_address_access_by_street_code, :get_region_list, :get_address_access_by_named_street_uid, :get_municipality_by_municipality_code, :get_address_access_by_uid, :get_municipality_list, :get_address_specific_by_address_access_uid, :get_named_street_by_street_code, :get_post_code_by_post_code_identifier, :get_named_street_by_uid]

# Get an array of region names
client.get_region_list.to_hash[:get_region_list_response][:region].map { |region| region[:region_name] }
# Result ["Nordjylland", "Midtjylland", "Syddanmark", "Hovedstaden", "Sj\303\246lland"]

# Get the municipalities and their codes
puts client.get_municipality_list.to_hash[:get_municipality_list_response][:municipality].map { |m| "#{m[:municipality_name]} (#{m[:municipality_code]})" }.join("\n")
# Result
#   ...
#   Greve (0253)
#   Køge (0259)
#   Frederiksværk-Hundested (0260)
#   ...