DumbViewHolder.java

public class DumbViewHolder extends RecyclerView.ViewHolder {
    TextView textTitle;
    TextView textLocation;
    TextView textDate;
    ImageView mapIcon;

    public DumbViewHolder(View itemView) {
        super(itemView);
        textTitle = (TextView) itemView.findViewById(R.id.text_title);
        textLocation = (TextView) itemView.findViewById(R.id.text_location);
        textDate = (TextView) itemView.findViewById(R.id.text_date);
        mapIcon = (ImageView) itemView.findViewById(R.id.map_icon);

    }
}

ExcellentAdventure.java

public class ExcellentAdventure {

    @Retention(SOURCE)
    @StringDef({ERA_BC, ERA_AD})
    public @interface Era {
    }

    public static final String ERA_BC = "BC";
    public static final String ERA_AD = "AD";

    private int year;
    @Era private String era;
    private String title;
    private String lat;
    private String lon;
    private String locationName;
    private String wikipediaTitle;

    public ExcellentAdventure(int year, String era, String title,
                              String lat, String lon,
                              String locationName, 
                              String wikipediaTitle) {
        this.year = year;
        this.era = era;
        this.title = title;
        this.lat = lat;
        this.lon = lon;
        this.locationName = locationName;
        this.wikipediaTitle = wikipediaTitle;
    }

    public int getYear() { return year; }

    @Era public String getEra() { return era; }

    public String getTitle() { return title; }

    public String getLat() { return lat; }

    public String getLon() { return lon; }

    public String getLocationName() { return locationName; }

    public String getWikipediaTitle() { return wikipediaTitle; }
}

OverworkedAdapter.java

public class OverworkedAdapter extends RecyclerView.Adapter {
    private List<ExcellentAdventure> items;
    private LayoutInflater inflater;

    public OverworkedAdapter(LayoutInflater inflater) {
        this.inflater = inflater;
        items = new ArrayList<>();
    }

    public void updateItems(final List<ExcellentAdventure> newItems) {
        final List<ExcellentAdventure> oldItems = new ArrayList<>(this.items);
        this.items.clear();
        if (newItems != null) {
            this.items.addAll(newItems);
        }
        DiffUtil.calculateDiff(new DiffUtil.Callback() {
            @Override
            public int getOldListSize() {
                return oldItems.size();
            }

            @Override
            public int getNewListSize() {
                return items.size();
            }

            @Override
            public boolean areItemsTheSame(int oldItemPosition, int newItemPosition) {
                return oldItems.get(oldItemPosition).equals(newItems.get(newItemPosition));
            }

            @Override
            public boolean areContentsTheSame(int oldItemPosition, int newItemPosition) {
                return oldItems.get(oldItemPosition).equals(newItems.get(newItemPosition));
            }
        }).dispatchUpdatesTo(this);

    }

    @Override
    public RecyclerView.ViewHolder onCreateViewHolder(ViewGroup parent, int viewType) {
        View v = inflater.inflate(R.layout.item_excellent_adventure, parent, false);
        return new DumbViewHolder(v);
    }

    @Override
    public void onBindViewHolder(RecyclerView.ViewHolder holder, int position) {
        DumbViewHolder vh = (DumbViewHolder) holder;
        final ExcellentAdventure item = items.get(position);
        vh.textTitle.setText(item.getTitle());
        vh.textLocation.setText(item.getLocationName());
        vh.textDate.setText(getFormattedDate(item));
        vh.textTitle.setOnClickListener(new View.OnClickListener() {
            @Override
            public void onClick(View view) {
                String url = "http://en.wikipedia.com/wiki/" + item.getWikipediaTitle();
                Intent i = new Intent(Intent.ACTION_VIEW,Uri.parse(url));
                view.getContext().startActivity(i);
            }
        });
        vh.mapIcon.setOnClickListener(new View.OnClickListener() {
            @Override
            public void onClick(View view) {
                String url = String.format("geo:%s,%s?q=%s",item.getLat(),item.getLon(),item.getLocationName());
                Uri gmmIntentUri = Uri.parse(url);
                Intent mapIntent = new Intent(Intent.ACTION_VIEW, gmmIntentUri);
                mapIntent.setPackage("com.google.android.apps.maps");
                view.getContext().startActivity(mapIntent);
            }
        });
    }

    private String getFormattedDate(ExcellentAdventure item) {
        String date = item.getYear() + " " + item.getEra();

        return date;
    }

    @Override
    public int getItemCount() {
        return items.size();
    }
}