Below is the list of tables from the database along with their columns and datatype. Need to generate an accurate SQL query for the question.
Only use the columns present in the respective table. Only use the columns which are required to generate the SQL query. Only use table joins if required and not otherwise.

### Tables ###
TABLE: CREATE TABLE membership_register_branch ( member_id number, branch_id text, register_year text )
TABLE: CREATE TABLE branch ( branch_id number, name text, open_year text, address_road text, city text, membership_amount text )
TABLE: CREATE TABLE purchase ( member_id number, branch_id text, year text, total_pounds number )
TABLE: CREATE TABLE member ( member_id number, card_number text, name text, hometown text, level number )

### Question ###
What is the name and open year for the branch with most number of memberships registered in 2016?

### Accurate SQL ###

SELECT T2.name, T2.open_year FROM membership_register_branch AS T1 JOIN branch AS T2 ON T1.branch_id = T2.branch_id WHERE T1.register_year = 2016 GROUP BY T2.branch_id ORDER BY COUNT(*) DESC LIMIT 1